# APPENDIX C ACCIDENT DATA

Table C-1: GWMP Accident Data

<table>
<colgroup>
<col style="width: 6%" />
<col style="width: 31%" />
<col style="width: 6%" />
<col style="width: 8%" />
<col style="width: 5%" />
<col style="width: 6%" />
<col style="width: 8%" />
<col style="width: 5%" />
<col style="width: 6%" />
<col style="width: 8%" />
<col style="width: 7%" />
</colgroup>
<tbody>
<tr class="odd">
<td rowspan="2">Node</td>
<td rowspan="2"><h2 id="description">Description</h2></td>
<td colspan="3">Injury Accidents</td>
<td colspan="3">Property Damage Only Accidents</td>
<td colspan="3">Total Accidents</td>
</tr>
<tr class="even">
<td>1994 - 1996</td>
<td>1997 – July 2001</td>
<td>Total</td>
<td>1994 - 1996</td>
<td>1997 – July 2001</td>
<td>Total</td>
<td>1994 - 1996</td>
<td>1997 – July 2001</td>
<td>Total: 1994 – July 2001</td>
</tr>
<tr class="odd">
<td>2257</td>
<td>Diverge – NB GWMP at ramp to NB I-395 (Williams Br.)</td>
<td>6</td>
<td>5</td>
<td>11</td>
<td>33</td>
<td>31</td>
<td>64</td>
<td>39</td>
<td>36</td>
<td>75</td>
</tr>
<tr class="even">
<td>2275</td>
<td>Merge – NB I-395 (Williams Br.) at ramp from NB GWMP</td>
<td>0</td>
<td>1</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>5</td>
<td>2</td>
<td>4</td>
<td>6</td>
</tr>
<tr class="odd">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>2263</td>
<td>Diverge – SB GWMP at ramp to NB I-395 (Williams Br.)</td>
<td>1</td>
<td>3</td>
<td>4</td>
<td>3</td>
<td>9</td>
<td>12</td>
<td>4</td>
<td>12</td>
<td>16</td>
</tr>
<tr class="odd">
<td>2276</td>
<td>Merge – NB I-395 (Williams Br.) at ramp from SB GWMP</td>
<td>4</td>
<td>3</td>
<td>7</td>
<td>9</td>
<td>8</td>
<td>17</td>
<td>13</td>
<td>11</td>
<td>24</td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>2277</td>
<td>Diverge – NB I-395 (Williams Br.) at ramp to SB GWMP</td>
<td>0</td>
<td>0</td>
<td>0</td>
<td>1</td>
<td>1</td>
<td>2</td>
<td>1</td>
<td>1</td>
<td>2</td>
</tr>
<tr class="even">
<td>2255</td>
<td>Merge – SB GWMP at ramp from NB I-395 (Williams Br.)</td>
<td>6</td>
<td>4</td>
<td>10</td>
<td>26</td>
<td>33</td>
<td>59</td>
<td>32</td>
<td>37</td>
<td>69</td>
</tr>
<tr class="odd">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>2278</td>
<td>Diverge – NB I-395 (Williams Br.) at ramp to NB GWMP (left
exit)</td>
<td>0</td>
<td>0</td>
<td>0</td>
<td>2</td>
<td>3</td>
<td>5</td>
<td>2</td>
<td>3</td>
<td>5</td>
</tr>
<tr class="odd">
<td>2259/100594*</td>
<td>Merge – NB GWMP at ramp from NB I-395 (Williams Br.)</td>
<td>0</td>
<td>11</td>
<td>11</td>
<td>5</td>
<td>21</td>
<td>26</td>
<td>5</td>
<td>32</td>
<td>37</td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>2267</td>
<td>Diverge – NB GWMP at ramp to SB I-395 (George Mason Br.)</td>
<td>2</td>
<td>1</td>
<td>3</td>
<td>8</td>
<td>9</td>
<td>17</td>
<td>10</td>
<td>10</td>
<td>20</td>
</tr>
<tr class="even">
<td>2271</td>
<td>Merge – SB I-395 (George Mason Br.) at ramp from NB GWMP</td>
<td>1</td>
<td>0</td>
<td>1</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>2</td>
<td>2</td>
<td>4</td>
</tr>
<tr class="odd">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>2274</td>
<td>Diverge – SB I-395 (George Mason Br.) at ramp to SB GWMP</td>
<td>0</td>
<td>0</td>
<td>0</td>
<td>0</td>
<td>1</td>
<td>1</td>
<td>0</td>
<td>1</td>
<td>1</td>
</tr>
<tr class="odd">
<td>2269</td>
<td>Merge – SB GWMP at ramp from SB I-395 (George Mason Br.)</td>
<td>1</td>
<td>0</td>
<td>1</td>
<td>8</td>
<td>10</td>
<td>18</td>
<td>9</td>
<td>10</td>
<td>19</td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>2265/100613</td>
<td>Diverge – SB GWMP at ramp to SB I-395 (George Mason Br.)</td>
<td>2</td>
<td>4</td>
<td>6</td>
<td>4</td>
<td>4</td>
<td>8</td>
<td>6</td>
<td>8</td>
<td>14</td>
</tr>
<tr class="even">
<td>2273</td>
<td>Merge – SB I-395 (George Mason Br.) at ramp from SB GWMP</td>
<td>0</td>
<td>1</td>
<td>1</td>
<td>5</td>
<td>1</td>
<td>6</td>
<td>5</td>
<td>2</td>
<td>7</td>
</tr>
<tr class="odd">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>2272</td>
<td>Diverge – SB I-395 (George Mason Br.) at ramp to NB GWMP</td>
<td>0</td>
<td>1</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>5</td>
<td>2</td>
<td>4</td>
<td>6</td>
</tr>
<tr class="odd">
<td>2261</td>
<td>Merge – NB GWMP at ramp from SB I-395 (George Mason Br.)</td>
<td>21</td>
<td>26</td>
<td>47</td>
<td>129</td>
<td>110</td>
<td>239</td>
<td>150</td>
<td>136</td>
<td>286</td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>2901</td>
<td>NB GWMP at Humpback Bridge over Boundary Channel</td>
<td>2</td>
<td>2</td>
<td>4</td>
<td>5</td>
<td>13</td>
<td>18</td>
<td>7</td>
<td>15</td>
<td>22</td>
</tr>
<tr class="even">
<td>2903</td>
<td>SB GWMP at Humpback Bridge over Boundary Channel</td>
<td>3</td>
<td>0</td>
<td>3</td>
<td>2</td>
<td>8</td>
<td>10</td>
<td>5</td>
<td>8</td>
<td>13</td>
</tr>
<tr class="odd">
<td>2905/2302</td>
<td>GWMP to Lady Bird Johnson Parking Lot</td>
<td>6</td>
<td>2</td>
<td>8</td>
<td>14</td>
<td>11</td>
<td>25</td>
<td>20</td>
<td>13</td>
<td>33</td>
</tr>
<tr class="even">
<td>2907/2304</td>
<td>GWMP Entrance to Columbia Island Marina</td>
<td>3</td>
<td>1</td>
<td>4</td>
<td>15</td>
<td>14</td>
<td>29</td>
<td>18</td>
<td>15</td>
<td>33</td>
</tr>
</tbody>
</table>

Source: *Traffic Safety Study*, 1998, Robert Peccia & Associates; *Park
Visitor Vehicle Accidents by Location*, U.S. Park Police, CY1997- July
31, 2001; Virginia Department of Transportation, HTRIS -- Accident
Subsystem, 1997 -- January 2002.

\*Note: 17 additional accidents (7 injury accidents and 10 property
damage accidents) were reported approximately 240 feet south (upstream)
of this node on I-395 from 1997 -- July 2001.

# APPENDIX D: Historic and cultural resources

Table D-1: Historic and Cultural Resources

+------------------------+-------+---------------------+--------------+
| **Site**               | *     | **Location**        | **Historic   |
|                        | *Year |                     | Status**     |
|                        | Bu    |                     |              |
|                        | ilt** |                     |              |
+------------------------+-------+---------------------+--------------+
| George Washington      | 1932  | Arlington County,   | National     |
| Memorial Parkway       | (in   | Fairfax County,     | Register     |
|                        | itial | City of Alexandria, |              |
|                        | seg   | Washington, DC and  | DC Inventory |
|                        | ment) |                     |              |
|                        | to    | Maryland            |              |
|                        | 1966  |                     |              |
+------------------------+-------+---------------------+--------------+
| The Pentagon           | 19    | Arlington County    | National     |
|                        | 40-42 |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | VA Landmarks |
|                        |       |                     | Register     |
+------------------------+-------+---------------------+--------------+
| Lyndon Baines Johnson  | 1977  | Arlington County    | National     |
| Memorial Grove         |       |                     | Register     |
+------------------------+-------+---------------------+--------------+
| Arlington Memorial     | 1932  | Washington, DC and  | National     |
| Bridge                 |       | Arlington County    | Register     |
|                        |       |                     |              |
|                        |       |                     | VA Landmarks |
|                        |       |                     | Register     |
+------------------------+-------+---------------------+--------------+
| Arlington National     |       | Arlington County    | National     |
| Cemetery               |       |                     | Register     |
|                        |       |                     | Eligible     |
+------------------------+-------+---------------------+--------------+
| Arlington House        | 1803  | Arlington National  | National     |
|                        |       | Cemetery            | Register     |
|                        |       |                     |              |
|                        |       |                     | VA Landmarks |
|                        |       |                     | Register     |
+------------------------+-------+---------------------+--------------+
| Fort Myer Historic     | 1908  | Fort Myer           | National     |
| District               |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | National     |
|                        |       |                     | Historic     |
|                        |       |                     | Landmark     |
|                        |       |                     |              |
|                        |       |                     | VA Landmarks |
|                        |       |                     | Register     |
+------------------------+-------+---------------------+--------------+
| Fort Myer Quarters One | 1895  | Fort Myer           | National     |
|                        |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | National     |
|                        |       |                     | Historic     |
|                        |       |                     | Landmark     |
+------------------------+-------+---------------------+--------------+
| National Airport       |       | Main Terminal,      | National     |
| Complex                |       | South Hangar Line   | Register     |
+------------------------+-------+---------------------+--------------+
| Jet Engine Test Cell   |       | National Airport    | National     |
|                        |       |                     | Register     |
+------------------------+-------+---------------------+--------------+
| Abingdon Research      |       | National Airport    | National     |
| Station                |       |                     | Register     |
|                        |       |                     | Eligible     |
+------------------------+-------+---------------------+--------------+
| Abingdon Plantation    |       | National Airport    | National     |
| Ruins                  |       |                     | Register     |
|                        |       |                     | Eligible     |
+------------------------+-------+---------------------+--------------+
| East and West Potomac  | Est.  | Washington, DC      | National     |
| Parks and Tidal Basin  | 1882  |                     | Register     |
|                        | -1897 |                     |              |
|                        |       |                     | DC Inventory |
+------------------------+-------+---------------------+--------------+
| Lincoln Memorial       | 1922  | Washington, DC      | National     |
|                        |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | DC Inventory |
+------------------------+-------+---------------------+--------------+
| Jefferson Memorial     | 1942  | Washington, DC      | National     |
|                        |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | DC Inventory |
+------------------------+-------+---------------------+--------------+

Table D-1: Historic and Cultural Resources

+------------------------+-------+---------------------+--------------+
| **Site**               | *     | **Location**        | **Historic   |
|                        | *Year |                     | Status**     |
|                        | Bu    |                     |              |
|                        | ilt** |                     |              |
+------------------------+-------+---------------------+--------------+
| L'Enfant Plan of       |       | Washington, DC      | National     |
| Washington (Squares,   |       |                     | Register     |
| Circles, Streets,      |       |                     |              |
| Vistas and Other       |       |                     | DC Inventory |
| Elements)              |       |                     |              |
+------------------------+-------+---------------------+--------------+
| National Mall Historic |       | Washington, DC      | National     |
| District^1^            |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | DC Inventory |
+------------------------+-------+---------------------+--------------+
| Hume School            | 1891  | Arlington Ridge     | National     |
|                        |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | VA Landmarks |
|                        |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | Arlington    |
|                        |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Colonial Village       | 1934  | Ft. Myer Heights    | National     |
|                        |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | VA Landmarks |
|                        |       |                     | Register     |
|                        |       |                     |              |
|                        |       |                     | Arlington    |
|                        |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Bureau of Engraving    | 1914  | Washington, DC      | DC Inventory |
| and Printing           |       |                     |              |
+------------------------+-------+---------------------+--------------+
| Fraser Family Cemetery |       | Arlington Ridge     | Arlington    |
|                        |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Arlington Ridge Pool   |       | Arlington Ridge     | Arlington    |
| House                  |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Fort Scott             |       | Arlington Ridge     | Arlington    |
|                        |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Harry Gray House       | 1881  | Arlington View      | Arlington    |
|                        |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| St. John's Baptist     | 1905  | Arlington View      | Arlington    |
| Church                 |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Hoffman Boston School  |       | Arlington View      | Arlington    |
|                        |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Colonial Village       |       | Ft. Myer Heights    | Arlington    |
| Shopping Center        |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Wakefield Manor        | 1943  | Ft. Myer Heights    | Arlington    |
| Apartments             |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Courthouse Gardens     | 1936  | Ft. Myer Heights    | Arlington    |
| Apartments             |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Apartments             | 1941  | Ft. Myer Heights    | Arlington    |
|                        |       |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+
| Lee Gardens Apartments | 19    | Lyon Park           | Arlington    |
|                        | 41-42 |                     | Co.          |
|                        |       |                     | Inventory    |
|                        | 19    |                     |              |
|                        | 49-50 |                     |              |
+------------------------+-------+---------------------+--------------+
| Washington and Lee     | 19    | Lyon Park           | Arlington    |
| Gardens Apartments     | 48-49 |                     | Co.          |
|                        |       |                     | Inventory    |
+------------------------+-------+---------------------+--------------+

Table D-1: Historic and Cultural Resources

  ------------------------ --------- --------------------- ---------------
  **Site**                 **Year    **Location**          **Historic
                           Built**                         Status**

  Arlington Hardware       1920      Columbia Pike         Arlington Co.
  Building                           Commercial Area       Inventory

  Westmont Shopping Center 1939      Columbia Pike         Arlington Co.
                                     Commercial Area       Inventory

  Arlington Theater        1939      Columbia Pike         Arlington Co.
                                     Commercial Area       Inventory

  Ristorante Michelangelo  1900      Columbia Pike         Arlington Co.
  (Old Dominion Bank)                Commercial Area       Inventory

                                                           
  ------------------------ --------- --------------------- ---------------

Source: *Final Environmental Assessment*, Washington National Airport
Traffic Control Tower Site Selection and Related Terminal Improvements,
October 1993; District of Columbia Inventory of Historic Sties; and
Arlington County Inventory of Historic Resources and Districts.

Notes:

^1^The National Mall Historic District is roughly bounded by the Capital
grounds on the east, Independence Avenue on the south, 15^th^ Street on
the west and Constitution Avenue on the north. A number of buildings and
sites lining the Mall are contributing elements of the historic
district, including the Washington Monument Grounds, the National
Botanical Gardens, the Smithsonian Arts and Industries Building, the
Freer Gallery of Art, the National Gallery of Art and the Natural
History Museum.

# APPENDIX E: PRELIMINARY SAFETY IMPROVEMENT ALTERNATIVES

Table E-1: Preliminary Safety Improvement Alternatives

+------------------------------------+----+---+---+---+----+----+----+
| **Location**                       | ** |   |   |   |    |    |    |
|                                    | Sa |   |   |   |    |    |    |
|                                    | fe |   |   |   |    |    |    |
|                                    | ty |   |   |   |    |    |    |
|                                    | I  |   |   |   |    |    |    |
|                                    | ss |   |   |   |    |    |    |
|                                    | ue |   |   |   |    |    |    |
|                                    | A  |   |   |   |    |    |    |
|                                    | dd |   |   |   |    |    |    |
|                                    | re |   |   |   |    |    |    |
|                                    | ss |   |   |   |    |    |    |
|                                    | ed |   |   |   |    |    |    |
|                                    | ** |   |   |   |    |    |    |
+====================================+====+===+===+===+====+====+====+
|                                    | *  | * | * | * | ** | ** | ** |
|                                    | *V | * | * | * | Pe | Pe | Re |
|                                    | eh | V | G | P | de | de | qu |
|                                    | ic | e | e | e | st | st | ir |
|                                    | ul | h | o | a | ri | ri | es |
|                                    | ar | i | m | k | an | an | a  |
|                                    | sa | c | e | p | -v | t  | lt |
|                                    | fe | l | t | e | eh | ra | er |
|                                    | ty | e | r | r | ic | il | na |
|                                    | a  | s | i | i | le | de | te |
|                                    | nd | p | c | o | c  | fi | r  |
|                                    | ac | e | r | d | on | ci | ou |
|                                    | ci | e | o | t | fl | en | te |
|                                    | de | d | a | r | ic | ci | to |
|                                    | nt | ( | d | a | ts | es | GW |
|                                    | p  | t | w | f | ** | ** | MP |
|                                    | ot | r | a | f |    |    | /I |
|                                    | en | a | y | i |    |    | -3 |
|                                    | ti | f | d | c |    |    | 95 |
|                                    | al | f | e | ( |    |    | ** |
|                                    | ** | i | f | q |    |    |    |
|                                    |    | c | i | u |    |    |    |
|                                    |    | c | c | e |    |    |    |
|                                    |    | a | i | u |    |    |    |
|                                    |    | l | e | i |    |    |    |
|                                    |    | m | n | n |    |    |    |
|                                    |    | i | c | g |    |    |    |
|                                    |    | n | i | / |    |    |    |
|                                    |    | g | e | w |    |    |    |
|                                    |    | ) | s | e |    |    |    |
|                                    |    | * | * | a |    |    |    |
|                                    |    | * | * | v |    |    |    |
|                                    |    |   |   | i |    |    |    |
|                                    |    |   |   | n |    |    |    |
|                                    |    |   |   | g |    |    |    |
|                                    |    |   |   | ) |    |    |    |
|                                    |    |   |   | * |    |    |    |
|                                    |    |   |   | * |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **COLUMBIA ISLAND MARINA           |    |   |   |   |    |    |    |
| ENTRANCE**                         |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **Right In/Out**                   |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Close center GWMP median (Right    | *  |   | * |   |    |    | *  |
| turn in/out of marina only)        | * |   | * |   |    |    | * |
|                                    | ** |   |  |   |    |    | ** |
|                                    |    |   | * |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **New Entrance**                   |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Close center GWMP median (Right    | *  |   | * |   |    |    | *  |
| turn in/out of marina only)        | * |   | * |   |    |    | * |
|                                    | ** |   |  |   |    |    | ** |
|                                    |    |   | * |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Close marina entrance to GWMP --   | *  |   | * |   |    |    | *  |
| construct new bridge from Boundary | * |   | * |   |    |    | * |
| Channel Drive                      | ** |   |  |   |    |    | ** |
|                                    |    |   | * |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **Signalize Entrance**             |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Signalize marina entrance and      | *  | * |   |   |    |    |    |
| implement traffic calming/ITS      | * | * |   |   |    |    |    |
| measures                           | ** |  |   |   |    |    |    |
|                                    |    | * |   |   |    |    |    |
|                                    |    | * |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **No Action**                      |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Status quo -- left & right turns   |    |   |   |   |    |    |    |
| in/out on GWMP                     |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **PEDESTRIAN CROSSING OF THE       |    |   |   |   |    |    |    |
| GWMP**                             |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **Modify Existing Crosswalk**      |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Existing crossing options:         |    | * |   |   | *  |    |    |
|                                    |    | * |   |   | * |    |    |
| 1\. Signalize pedestrian crosswalk |    |  |   |   | ** |    |    |
| (north of marina)                  |    | * |   |   |    |    |    |
|                                    |    | * |   |   |    |    |    |
| Implement traffic calming/ITS      |    |   |   |   |    |    |    |
| measures for crosswalk             |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| 2\. Construct pedestrian underpass | *  |   |   |   | *  |    |    |
| at general location of crosswalk   | * |   |   |   | * |    |    |
| and close Navy-Marine              | ** |   |   |   | ** |    |    |
| Memorial/Lady Bird Johnson Park    |    |   |   |   |    |    |    |
| parking lot.                       |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| 3\. Construct pedestrian overpass  | *  |   |   |   | *  |    |    |
| at general location of crosswalk   | * |   |   |   | * |    |    |
| and close Navy-Marine              | ** |   |   |   | ** |    |    |
| Memorial/Lady Bird Johnson Park    |    |   |   |   |    |    |    |
| parking lot.                       |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **Relocate Crossing**              |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| New crossing options:              | *  |   |   |   | *  |    |    |
|                                    | * |   |   |   | * |    |    |
| 1\. Construct pedestrian underpass | ** |   |   |   | ** |    |    |
| north of the Humpback Bridge       |    |   |   |   |    |    |    |
| (eliminate existing at-grade       |    |   |   |   |    |    |    |
| crosswalk)                         |    |   |   |   |    |    |    |
|                                    |    |   |   |   |    |    |    |
| Close Navy-Marine Memorial/Lady    |    |   |   |   |    |    |    |
| Bird Johnson Park parking lot.     |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| 2\. Construct pedestrian underpass | *  |   |   |   | *  |    |    |
| north and south of the Humpback    | * |   |   |   | * |    |    |
| Bridge (eliminate existing         | ** |   |   |   | ** |    |    |
| at-grade crosswalk)                |    |   |   |   |    |    |    |
|                                    |    |   |   |   |    |    |    |
| Construct pedestrian trail         |    |   |   |   |    |    |    |
| connection from south underpass,   |    |   |   |   |    |    |    |
| around south edge of Boundary      |    |   |   |   |    |    |    |
| Channel lagoon, to Pentagon river  |    |   |   |   |    |    |    |
| terrace.                           |    |   |   |   |    |    |    |
|                                    |    |   |   |   |    |    |    |
| Close Navy-Marine Memorial/Lady    |    |   |   |   |    |    |    |
| Bird Johnson Park parking lot.     |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| 3\. Construct pedestrian overpass  | *  |   |   |   | *  |    |    |
| north of the Humpback Bridge       | * |   |   |   | * |    |    |
| (eliminate existing at-grade       | ** |   |   |   | ** |    |    |
| crosswalk)                         |    |   |   |   |    |    |    |
|                                    |    |   |   |   |    |    |    |
| Close Navy-Marine Memorial/Lady    |    |   |   |   |    |    |    |
| Bird Johnson Park parking lot.     |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **No Action**                      |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Retain existing crosswalk with no  |    |   |   |   |    |    |    |
| modification.                      |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+

Table E-1: Preliminary Safety Improvement Alternatives

+------------------------------------+----+---+---+---+----+----+----+
| **Location**                       | ** |   |   |   |    |    |    |
|                                    | Sa |   |   |   |    |    |    |
|                                    | fe |   |   |   |    |    |    |
|                                    | ty |   |   |   |    |    |    |
|                                    | I  |   |   |   |    |    |    |
|                                    | ss |   |   |   |    |    |    |
|                                    | ue |   |   |   |    |    |    |
|                                    | A  |   |   |   |    |    |    |
|                                    | dd |   |   |   |    |    |    |
|                                    | re |   |   |   |    |    |    |
|                                    | ss |   |   |   |    |    |    |
|                                    | ed |   |   |   |    |    |    |
|                                    | ** |   |   |   |    |    |    |
+====================================+====+===+===+===+====+====+====+
|                                    | *  | * | * | * | ** | ** | ** |
|                                    | *V | * | * | * | Pe | Pe | Re |
|                                    | eh | V | G | P | de | de | qu |
|                                    | ic | e | e | e | st | st | ir |
|                                    | ul | h | o | a | ri | ri | es |
|                                    | ar | i | m | k | an | an | a  |
|                                    | sa | c | e | p | -v | t  | lt |
|                                    | fe | l | t | e | eh | ra | er |
|                                    | ty | e | r | r | ic | il | na |
|                                    | a  | s | i | i | le | de | te |
|                                    | nd | p | c | o | c  | fi | r  |
|                                    | ac | e | r | d | on | ci | ou |
|                                    | ci | e | o | t | fl | en | te |
|                                    | de | d | a | r | ic | ci | to |
|                                    | nt | ( | d | a | ts | es | GW |
|                                    | p  | t | w | f | ** | ** | MP |
|                                    | ot | r | a | f |    |    | /I |
|                                    | en | a | y | i |    |    | -3 |
|                                    | ti | f | d | c |    |    | 95 |
|                                    | al | f | e | ( |    |    | ** |
|                                    | ** | i | f | q |    |    |    |
|                                    |    | c | i | u |    |    |    |
|                                    |    | c | c | e |    |    |    |
|                                    |    | a | i | u |    |    |    |
|                                    |    | l | e | i |    |    |    |
|                                    |    | m | n | n |    |    |    |
|                                    |    | i | c | g |    |    |    |
|                                    |    | n | i | / |    |    |    |
|                                    |    | g | e | w |    |    |    |
|                                    |    | ) | s | e |    |    |    |
|                                    |    | * | * | a |    |    |    |
|                                    |    | * | * | v |    |    |    |
|                                    |    |   |   | i |    |    |    |
|                                    |    |   |   | n |    |    |    |
|                                    |    |   |   | g |    |    |    |
|                                    |    |   |   | ) |    |    |    |
|                                    |    |   |   | * |    |    |    |
|                                    |    |   |   | * |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **SOUTHBOUND I-395 RAMP TO         |    |   |   |   |    |    |    |
| NORTHBOUND GWMP and HUMPBACK       |    |   |   |   |    |    |    |
| BRIDGE**                           |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| **Realign Ramp**                   |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Realign existing ramp approx. 200  | *  | * |   |   | *  |    |    |
| feet to the south and provide      | * | * |   |   | * |    |    |
| acceleration lane to the Humpback  | ** |  |   |   | ** |    |    |
| Bridge. Retain two northbound      |    | * |   |   |    |    |    |
| lanes across the Humpback Bridge.  |    | * |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Adjust vertical profile of the     | *  |   | * |   |    |    |    |
| bridge.                            | * |   | * |   |    |    |    |
|                                    | ** |   |  |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Mt. Vernon Trail options:          |    |   |   |   | *  | *  |    |
|                                    |    |   |   |   | * | * |    |
| 1\. Widen the Mt. Vernon Trail     |    |   |   |   | ** | ** |    |
| across the Humpback Bridge and     |    |   |   |   |    |    |    |
| install barrier between trail and  |    |   |   |   |    |    |    |
| vehicular traffic.                 |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| 2\. Construct separate Mt. Vernon  |    |   |   |   | *  | *  |    |
| Trail bridge over Boundary         |    |   |   |   | * | * |    |
| Channel.                           |    |   |   |   | ** | ** |    |
+------------------------------------+----+---+---+---+----+----+----+
| **Widen Bridge**                   |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Widen the Humpback Bridge to       | *  |   | * | * |    |    |    |
| include a northbound acceleration  | * |   | * | * |    |    |    |
| lane in addition to the two        | ** |   |  |  |    |    |    |
| northbound and two southbound      |    |   | * | * |    |    |    |
| travel lanes.                      |    |   | * | * |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Adjust vertical profile of the     | *  |   | * |   |    |    |    |
| bridge.                            | * |   | * |   |    |    |    |
|                                    | ** |   |  |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Mt. Vernon Trail options:          |    |   |   |   | *  | *  |    |
|                                    |    |   |   |   | * | * |    |
| 1\. Widen the Mt. Vernon Trail     |    |   |   |   | ** | ** |    |
| across the Humpback Bridge and     |    |   |   |   |    |    |    |
| install barrier between trail and  |    |   |   |   |    |    |    |
| vehicular traffic.                 |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| 2\. Construct separate Mt. Vernon  |    |   |   |   | *  | *  |    |
| Trail bridge over Boundary         |    |   |   |   | * | * |    |
| Channel.                           |    |   |   |   | ** | ** |    |
+------------------------------------+----+---+---+---+----+----+----+
| **Construct Second, Parallel       |    |   |   |   |    |    |    |
| Bridge**                           |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Construct a second bridge across   | *  |   | * | * |    |    |    |
| the Boundary Channel inlet         | * |   | * | * |    |    |    |
| parallel to the Humpback Bridge to | ** |   |  |  |    |    |    |
| carry two southbound GWMP travel   |    |   | * | * |    |    |    |
| lanes. Modify the Humpback Bridge  |    |   | * | * |    |    |    |
| to include a northbound            |    |   |   |   |    |    |    |
| acceleration lane and two          |    |   |   |   |    |    |    |
| northbound travel lanes.           |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Adjust vertical profile of the     | *  |   | * |   |    |    |    |
| bridge.                            | * |   | * |   |    |    |    |
|                                    | ** |   |  |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
|                                    |    |   | * |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Mt. Vernon Trail options:          |    |   |   |   | *  | *  |    |
|                                    |    |   |   |   | * | * |    |
| 1\. Widen the Mt. Vernon Trail     |    |   |   |   | ** | ** |    |
| across the Humpback Bridge and     |    |   |   |   |    |    |    |
| install barrier between trail and  |    |   |   |   |    |    |    |
| vehicular traffic.                 |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| 2\. Construct separate Mt. Vernon  |    |   |   |   | *  | *  |    |
| Trail bridge over Boundary         |    |   |   |   | * | * |    |
| Channel.                           |    |   |   |   | ** | ** |    |
+------------------------------------+----+---+---+---+----+----+----+
| **Replace Bridge**                 |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Replace the existing bridge to     | *  |   | * | * |    |    |    |
| include a northbound acceleration  | * |   | * | * |    |    |    |
| lane in addition to the two        | ** |   |  |  |    |    |    |
| northbound and two southbound      |    |   | * | * |    |    |    |
| travel lanes and adjusting the     |    |   | * | * |    |    |    |
| vertical profile.                  |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| Mt. Vernon Trail options:          |    |   |   |   | *  | *  |    |
|                                    |    |   |   |   | * | * |    |
| 1\. Widen the Mt. Vernon Trail     |    |   |   |   | ** | ** |    |
| across the Humpback Bridge and     |    |   |   |   |    |    |    |
| install barrier between trail and  |    |   |   |   |    |    |    |
| vehicular traffic.                 |    |   |   |   |    |    |    |
+------------------------------------+----+---+---+---+----+----+----+
| 2\. Construct separate Mt. Vernon  |    |   |   |   | *  | *  |    |
| Trail bridge over Boundary         |    |   |   |   | * | * |    |
| Channel.                           |    |   |   |   | ** | ** |    |
+------------------------------------+----+---+---+---+----+----+----+

Table E-1: Preliminary Safety Improvement Alternatives

  -------------------------------------------------------------------------------------------------------------------------------------------------------------
  **Location**                         **Safety                                                                                                  
                                       Issue                                                                                                     
                                       Addressed**                                                                                               
  ------------------------------------ ------------- ------------ ---------------- --------------------- ---------------------- ---------------- --------------
                                       **Vehicular   **Vehicle    **Geometric      **Peak period traffic **Pedestrian-vehicle   **Pedestrian     **Requires
                                       safety and    speed        roadway          (queuing/weaving)**   conflicts**            trail            alternate
                                       accident      (traffic     deficiencies**                                                deficiencies**   route to
                                       potential**   calming)**                                                                                  GWMP/I-395**

  **SOUTHBOUND I-395 RAMP TO                                                                                                                     
  NORTHBOUND GWMP and HUMPBACK                                                                                                                   
  BRIDGE**                                                                                                                                       

  **No Build with Pedestrian                                                                                                                     
  Modifications**                                                                                                                                

  2 lanes northbound & southbound with               ****                                                                                       
  existing vertical alignment, plus                                                                                                              
  traffic calming measures on ramp.                                                                                                              

  Widen Mt. Vernon Trail, add barrier                ****                                               ****                  ****            
  on Humpback Bridge without modifying                                                                                                           
  bridge by reducing vehicular travel                                                                                                            
  lane widths.                                                                                                                                   

  **No Action**                                                                                                                                  

  2 lanes northbound & southbound with               ****                                                                                       
  existing vertical alignment, plus                                                                                                              
  traffic calming measures on ramp.                                                                                                              

  No modifications to the Mt. Vernon                 ****                                               ****                  ****            
  Trail.                                                                                                                                         

  **SOUTHBOUND GWMP RAMP TO SOUTHBOUND                                                                                                           
  I-395**                                                                                                                                        

  **Eliminate Ramp**                                                                                                                             

  Close the southbound GWMP ramp to    ****                      ****            ****                                                         ****
  southbound I-395                                                                                                                               

  **Lengthen Deceleration Lane on the                                                                                                            
  Ramp**                                                                                                                                         

  Lengthen the deceleration lane for   ****                      ****                                                                          
  southbound GWMP/I-395 ramp                                                                                                                     

  **No Action**                                                                                                                                  

  Keep ramp open, plus traffic calming               ****                                                                                       
  measures on ramp                                                                                                                               

  **NORTHBOUND I-395 RAMP TO                                                                                                                     
  NORTHBOUND GWMP**                                                                                                                              

  **Eliminate Ramp**                                                                                                                             

  Close the northbound I-395 ramp to   ****                      ****            ****                                                         ****
  northbound GWMP                                                                                                                                

  **Lengthen Deceleration Lane on the                                                                                                            
  Ramp**                                                                                                                                         

  Lengthen the deceleration lane for   ****                      ****                                                                          
  the northbound I-395/GWMP ramp                                                                                                                 

  **No Action**                                                                                                                                  

  Keep ramp open, plus traffic calming               ****                                                                                       
  measures on ramp                                                                                                                               

  **SOUTHBOUND GWMP ACCESS TO                                                                                                                    
  NORTHBOUND\                                                                                                                                    
  I-395/ROCHAMBEAU BRIDGE**                                                                                                                      

  **New Ramp**                                                                                                                                   

  Construct new ramp from southbound   ****                      ****            ****                                                         
  GWMP to northbound I-395/Rochambeau                                                                                                            
  Bridge                                                                                                                                         

  **No Action**                                                                                                                                  

  Status quo -- no new ramp                                                                                                                      
  -------------------------------------------------------------------------------------------------------------------------------------------------------------

Table E-1: Preliminary Safety Improvement Alternatives

  -------------------------------------------------------------------------------------------------------------------------------------------------------------
  **Location**                         **Safety                                                                                                  
                                       Issue                                                                                                     
                                       Addressed**                                                                                               
  ------------------------------------ ------------- ------------ ---------------- --------------------- ---------------------- ---------------- --------------
                                       **Vehicular   **Vehicle    **Geometric      **Peak period traffic **Pedestrian-vehicle   **Pedestrian     **Requires
                                       safety and    speed        roadway          (queuing/weaving)**   conflicts**            trail            alternate
                                       accident      (traffic     deficiencies**                                                deficiencies**   route to
                                       potential**   calming)**                                                                                  GWMP/I-395**

  **NORTHBOUND GWMP ACCESS TO                                                                                                                    
  NORTHBOUND\                                                                                                                                    
  I-395/ROCHAMBEAU BRIDGE**                                                                                                                      

  **New Ramp**                                                                                                                                   

  Construct new ramp from northbound   ****                      ****            ****                                                         ****
  GWMP to northbound I-395/Rochambeau                                                                                                            
  Bridge (and close ramp from                                                                                                                    
  northbound I-395 to northbound GWMP)                                                                                                           

  **No Action**                                                                                                                                  

  Status quo -- no new ramp(s)                                                                                                                   
  -------------------------------------------------------------------------------------------------------------------------------------------------------------

# APPENDIX F: Documentation of Public Involvement

Table F-1: Comments Received After the June, 2001 Public Meetings

  ------------------------ ----------- ------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- --------
                           **A**       **B**   **C**    **D**    **E**    **F**    **G**    **H**    **I**    **J**    **K**    **L**    **M**    **N**    **O**    **P**

  Ellen A. Armbruster      Y           Y                         Y        Y                 Y                 Y                                                     
  (Arlington Resident)                                                                                                                                              

  Harriet Wood Bowden                                                              Y                                                                                
  (Arlington Resident)                                                                                                                                              

  John J. Corley, Jr.      Y           N                                  Y                 Y                                   Y        Y                 Y        
  (National Potomac Yacht                                                                                                                                           
  Club)                                                                                                                                                             

  Marc A. Ferrara (WABA)                                                  Y                                            Y                                            

  Joy Hecht (Arlington                 Y                                  Y                                                                                         N
  Resident and Chair,                                                                                                                                               
  Arlington County                                                                                                                                                  
  Environment & Energy                                                                                                                                              
  Conservation Commission;                                                                                                                                          
  Member, Arlington County                                                                                                                                          
  Bike Advisory Committee;                                                                                                                                          
  Member, Arlington                                                                                                                                                 
  Boathouse Task Force)                                                                                                                                             

  H. Jeyel (Columbia       N           N       Y        Y                 Y                                                                       Y                 
  Island Marina                                                                                                                                                     
  Slipholder)                                                                                                                                                       

  Frank J. Poli (Charles                                                                                                                                            N
  E. Smith)                                                                                                                                                         

  Janis Schaffer                                                                                     Y                                                              
  (Alexandria Resident)                                                                                                                                             

  Neal Sigmon (Arlington                                         Y        Y                                                                                         
  Resident)                                                                                                                                                         

  Timothy J. Troha                                               Y        Y                                            Y                                            
  (Alexandria Resident)                                                                                                                                             

  **Totals**               **2Y/1N**   **2Y/   **1Y**   **1Y**   **3Y**   **7Y**   **1Y**   **2Y**   **1Y**   **1Y**   **2Y**   **1Y**   **1Y**   **1Y**   **1Y**   **2N**
                                       2N**                                                                                                                         
  ------------------------ ----------- ------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- -------- --------

**Key**

Columbia Island Marina Entrance

A: Limit marina traffic to right in/right out.

B: Close off GWMP access to the marina and build a new entrance bridge
via Boundary Channel Drive.

C: Signalize marina entrance.

Humpback Bridge

D: Add separate pedestrian bridge over Boundary Channel.

E: Widen MVT over bridge and install a barrier.

F: Construct pedestrian underpasses on north and south sides of bridge,
eliminating the existing at-grade crosswalk and providing access to
Arlington County trails.

G: Add pedestrian/bike bridge to connect marina with the MVT.

H: Remove Navy-Marine Memorial parking lot.

I: Enforce parking regulations at the Navy-Marine Memorial parking lot.

J: Modify trail route around Memorial to improve safety.

K: Widen MVT to design standards (off bridge).

L Adjust the vertical profile of the bridge to increase sight distance.

M: Add an acceleration lane for the Southbound I-395 to Northbound GWMP
ramp.

N: Raise the height/clearance of the Humpback Bridge for boats.

GWMP/I-395 Ramps

O: Improve acceleration/deceleration lanes.

P: Close ramps (Southbound GWMP to Southbound I-395 and Northbound I-395
to Northbound GWMP).

# APPENDIX G: Documentation of Agency consultation

The following information is contained in this appendix:

-   Example of the FHWA letter to applicable government agencies and
    organizations inviting them to consult on the project.

-   Agency responses received in reply to the invitation to consult on
    the project.

June 7, 2001

Mr. Mark Kellogg

Planning Division Chief

Arlington County, Department of Public Works

No. 1 Courthouse Plaza

2100 Clarendon Blvd.

Suite 717

Arlington, VA 22201

Dear Mr. Kellogg:

In cooperation with the George Washington Memorial Parkway (GWMP) Unit
of the National Park Service (NPS), the Federal Highway Administration
(FHWA), Eastern Federal Lands Highway Division (EFLHD) has initiated
planning and engineering studies to investigate the need for traffic
safety improvements and other modifications to the GWMP in the vicinity
of Interstate 395 and the 14^th^ Street Bridge. The portion of the
Parkway under investigation is located in Virginia and the District of
Columbia. It is owned by the Federal government and operated by the NPS.

Initial efforts to document existing roadway, traffic, structural and
environmental conditions within the Study Area are currently underway.
The Study Area generally encompasses the GWMP between the VA Route 27
overpass and the I-395/Williams Bridge interchange (see attached map).
The Columbia Island Marina and LBJ Memorial Grove are also included in
the Study Area. Using the existing conditions information as a baseline,
roadway and bicycle/pedestrian trail improvements will be developed to
more safely and efficiently accommodate motorists, bicyclists and
pedestrians using that segment of the GWMP. National Environmental
Policy Act (NEPA) documentation will also be prepared to evaluate the
proposed improvement alternatives.

A Public Involvement Meeting to discuss the study is scheduled for
Tuesday, June 19, 2001 from 4:00 PM to 7:00 PM. The meeting will be held
at the Aurora Hills Recreation Center, 735 18^TH^ Street South,
Arlington, VA 22202. A second public meeting is scheduled for Wednesday,
June 20, 2001 from 4:00 PM to 7:00 PM at the National Park Service
National Capital Region Headquarters, 1100 Ohio Drive, SW, Washington,
DC 20242. Representatives of the FHWA and the NPS will be available at
the meetings to informally discuss the study and proposed safety
improvements. No formal presentation will be made.

Safety concerns on the GWMP include high traffic volumes, excessive
vehicle speeds, vehicle conflicts that occur at merge areas on
high-speed on-ramps, and conflicts between vehicles and the many
pedestrians and bicyclists that use the Parkway for recreational and
commuting purposes. A number of prior studies, most recently the 1998
Virginia Department of Transportation *14^th^ Street Bridge Corridor
Improvement Feasibility Study*, have documented the safety concerns
within the Study Area. Areas of particular concern, as documented in
previous studies, include:

-   Southbound I-395/George Mason Bridge ramp to northbound GWMP.

-   Intersection of the GWMP and the Columbia Island Marina/Navy-Marine
    Corps Memorial entrance.

-   Northbound I-395/Rochambeau Bridge ramp to northbound GWMP.

-   Southbound GWMP access to northbound I-395 (Williams/Rochambeau
    Bridges).

-   Southbound GWMP ramp to southbound I-395.

Potential safety improvements to be evaluated will include
recommendations identified in previous studies as well as improvements
identified as part of the current investigations. Previously identified
safety improvements include:

-   Closing the ramp from northbound I-395/Williams Bridge to northbound
    GWMP.

-   Constructing an acceleration lane for the ramp from southbound
    I-395/Mason Bridge to northbound GWMP.

-   Widening of the Boundary Channel Bridge (also known as Humpback
    Bridge) to better accommodate pedestrian circulation.

-   Closing the ramp from southbound GWMP to southbound I-395.

-   Constructing a new ramp from southbound GWMP to northbound
    I-395/Rochambeau Bridge.

-   Eliminating the parking lot at the Navy-Marine Corps Memorial
    (across from the Columbia Island marina entrance) and provide an
    alternate means of pedestrian access from the memorial to the marina
    parking area.

-   Limiting turning movements at the Columbia Island marina entrance to
    right in/right out only.

-   Relocating the Columbia Island marina entrance from the GWMP to an
    alternative location accessed via Boundary Channel Drive.

The FHWA and the NPS would appreciate written comments from your
organization regarding the planned safety improvements for the GWMP.
These comments may include a request for coordination, consultation or
review of the NEPA document. Please direct written comments to:

Mr. Alan Teikari\
Planning and Coordination Engineer\
Federal Highway Administration\
Eastern Federal Lands Highway Division\
21400 Ridgetop Circle\
Sterling, VA 20166-6511\
FAX (703) 404-6217

Parsons Brinckerhoff Quade and Douglas, Inc. have been retained by the
FHWA to undertake the engineering and environmental investigations.
General questions concerning this study or the public meeting should be
directed to me at (703) 742-5873.

Thank you for your cooperation and involvement in this project.

Sincerely yours,

On behalf of the FHWA and NPS

Christine Hoeffner

Lead Planner

Enclosure

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