# U.S. Route 6 in Colorado

U.S. Highway 6 (US 6) is a part of the United States Numbered Highway System that travels from Bishop, California, to Provincetown, Massachusetts. In the U.S. state of Colorado, US 6 is an east–west highway stretching from Utah to Nebraska. Much of the route overlaps other highways in Colorado, and, as a result, much of US 6 is unsigned.

## Route description

US 6 is concurrent with Interstate 70 (I-70) for a significant portion of its length from the Utah state line to Denver. When the highway enters the western Denver suburbs, US 6 coincidentally aligns with 6th Avenue in the grid system, where it is known as 6th Avenue Freeway. Once it reaches I-25, US 6 travels north briefly, then follows I-76 for most of its length east of Denver. It is unsigned while it is overlapped.
The highest altitude along US 6 is 11,990 feet (3,650 m) at Loveland Pass, where it crosses the Continental Divide. It continues down the Clear Creek valley until it reaches I-70, where it is briefly overlapped until I-70 leaves the Clear Creek valley. US 6 continues down Clear Creek and into Denver, where it turns into a freeway with six lanes. East of Denver, it continues east while joined with I-76 until it reaches Sterling, where it diverges from the Interstate. The last town in Colorado through which it passes is Holyoke.

## Major intersections

| County | Location | mi | km | Exit | Destinations | Notes |
| Mesa | ​ | 0.000 | 0.000 | | I-70 west (US 6 / US 50 west) – Salina | Continuation into Utah |
| Mesa | ​ | 1.814 | 2.919 | 2 | Rabbit Valley | Exit number follows I-70 |
| Mesa | Mack | 11.106 | 17.873 | | I-70 east | Eastern end of I-70 overlap; I-70 exit 11 |
| Mesa | Loma | 15.132 | 24.353 | | SH 139 to I-70 – Loma, Rangely | To I-70 via SH 139 south |
| Mesa | Fruita | 19.955 | 32.114 | | SH 340 east (Coulson Street) to I-70 | Western terminus of SH 340 |
| Mesa | Grand Junction | 26.080 | 41.972 | | I-70 BL begins / I-70 – Denver, Utah | Western end of I-70 BL overlap; I-70 exit 26; diverging diamond interchange |
| Mesa | Grand Junction | 28.244 | 45.454 | | Patterson Road / 24 RoadRedlands Parkway south | Partial interchange |
| Mesa | Grand Junction | 30.447 | 49.000 | | I-70 BL / US 50 east – Montrose | Eastern end of I-70 BL/US 50 overlap; no westbound exit |
| Mesa | Grand Junction | 34.859 | 56.100 | | I-70 BL west | Western end of I-70 BL overlap |
| Mesa | Clifton | 37.267 | 59.975 | | SH 141 south | Northern terminus of SH 141 |
| Mesa | Clifton | 37.726 | 60.714 | | I-70 BL east to I-70 – Utah, Denver | Eastern end of I-70 BL overlap |
| Mesa | ​ | 46.51043.682 | 74.85170.299 | | I-70 west | Western end of I-70 overlap; I-70 exit 44; westbound left exit and eastbound left entrance; mileposts change to reflect I-70 mileage |
| Mesa | ​ | 45.332 | 72.955 | 46 | Cameo | Exit numbers follow I-70 |
| Mesa | ​ | 46.867 | 75.425 | 47 | James M. Robb – Colorado River State Park, Island Acres | Former port of entry |
| Mesa | ​ | 49.015 | 78.882 | 49 | SH 65 south to SH 330 east – Grand Mesa, Collbran | |
| Mesa | ​ | 61.64864.249 | 99.213103.399 | | I-70 east | Eastern end of I-70 overlap; I-70 exit 62; mileposts change to reflect US 6 mileage |
| Garfield | Parachute | 72.284– 72.688 | 116.330– 116.980 | | I-70 / Frontage Road | Dumbbell interchange; I-70 exit 72 |
| Garfield | Rifle | 88.895 | 143.063 | | I-70 | I-70 exit 87 |
| Garfield | Rifle | 91.240 | 146.837 | | SH 13 north – Meeker, Craig | East end of state maintenance; west end of SH 13 overlap |
| Garfield | Rifle | | | | SH 13 south to I-70 | East end of SH 13 overlap; westbound access via Whiteriver Avenue |
| Garfield | Chacra | 110.806109.000 | 178.325175.418 | | I-70 west | West end of state maintenance; western end of I-70 overlap; I-70 exit 109; mileposts change to reflect I-70 mileage |
| Garfield | ​ | 111.328 | 179.165 | 111 | South Canyon | Exit number follows I-70 |
| Garfield | Glenwood Springs | 114.295116.898 | 183.940188.129 | | I-70 east / Gilstrap Court / Midland Avenue / Mel Ray Road / Highway 6 west – Glenwood Springs Mall | Dumbbell interchange; east end of state maintenance; Highway 6 west is former US 6/ US 24 west; I-70 exit 114; mileposts change to reflect US 6 mileage |
| Garfield | Glenwood Springs | 118.645 | 190.941 | | Devereaux Road | West end of state maintenance |
| Garfield | Glenwood Springs | 118.983116.380 | 191.485187.295 | | SH 82 east (Grand Avenue) / I-70 west / E. 6th Street / Laurel Street – Aspen | Partial dumbbell interchange with I-70; western end of I-70 overlap; I-70 exit 116; western terminus of SH 82; mileposts change to reflect I-70 mileage |
| Garfield | ​ | 118.640 | 190.933 | 119 | No Name | Exit numbers follow I-70 |
| Garfield | ​ | 120.954 | 194.657 | 121 | Grizzly Creek to Hanging Lake | Hanging Lake appears only on westbound signage |
| Garfield | ​ | 122.660 | 197.402 | 123 | Shoshone | Eastbound exit and westbound entrance |
| Garfield | ​ | 125.061 | 201.266 | 125 | Hanging Lake | Eastbound exit and westbound entrance |
| Garfield | ​ | 125.269 | 201.601 | Hanging Lake Tunnel | Hanging Lake Tunnel | Hanging Lake Tunnel |
| Garfield | ​ | 128.317 | 206.506 | 129 | Bair Ranch Road | |
| Eagle | ​ | 133.384– 134.053 | 214.661– 215.737 | 133 | Dotsero | |
| Eagle | Gypsum | 139.533141.818 | 224.557228.234 | | I-70 east – Denver | Eastern end of I-70 overlap; I-70 exit 140; mileposts change to reflect US 6 mileage |
| Eagle | Gypsum | 141.993 | 228.516 | | Frontage Road / Trail Gulch Road | Roundabout; east end of state maintenance; Frontage Rd. is former US 6 west |
| Eagle | Eagle | 149.718 | 240.948 | | Church Street / Eby Creek Road (I-70 BS north) to I-70 | Roundabout; west end of state maintenance; southern terminus of I-70 BS |
| Eagle | Wolcott | 159.500 | 256.690 | | SH 131 north – Steamboat Springs | Western end of SH 131 overlap |
| Eagle | ​ | 159.889 | 257.316 | | SH 131 south to I-70 | Eastern end of SH 131 overlap |
| Eagle | Eagle-Vail | 172.185 | 277.105 | | I-70 east | I-70 east exit 169; no access to I-70 west |
| Eagle | ​ | 174.541171.105 | 280.897275.367 | | I-70 west – Aspen US 24 east – Minturn, Leadville | Western end of I-70 overlap; I-70 exit 171; western terminus of US 24; mileposts change to reflect I-70 mileage |
| Eagle | Vail | 173.319 | 278.930 | 173 | West Vail | Exit numbers follow I-70 |
| Eagle | Vail | 176.057 | 283.336 | 176 | Vail Ski Area – Vail Museum | |
| Eagle | Vail | 179.866 | 289.466 | 180 | East Vail | |
| Vail Pass | Vail Pass | 189.981 | 305.745 | Elevation 10,662 feet (3,250 m) | Elevation 10,662 feet (3,250 m) | Elevation 10,662 feet (3,250 m) |
| Summit | ​ | 190.095 | 305.928 | 190 | Shrine Pass Road – Vail Pass rest area | |
| Summit | ​ | 195.298 | 314.302 | 195 | SH 91 south – Copper Mountain, Leadville | Northern terminus of SH 91 |
| Summit | ​ | 197.854 | 318.415 | 198 | Officers Gulch | |
| Summit | Frisco | 200.995 | 323.470 | 201 | Main Street | |
| Summit | Frisco | 202.352 | 325.654 | 203 | SH 9 south – Frisco, Breckenridge | Western end of SH 9 overlap |
| Summit | Silverthorne | 205.423208.659 | 330.596335.804 | | SH 9 north (Blue River Parkway) / I-70 east – Silverthorne | Eastern end of I-70/SH 9 overlap; I-70 exit 205; mileposts change to reflect US 6 mileage |
| Loveland Pass | Loveland Pass | 225.552 | 362.991 | Elevation 11,990 feet (3,650 m) | Elevation 11,990 feet (3,650 m) | Elevation 11,990 feet (3,650 m) |
| Clear Creek | ​ | 229.896216.185 | 369.982347.916 | | I-70 west – Grand Junction | Western end of I-70 overlap; mileposts change to reflect I-70 mileage |
| Clear Creek | ​ | 218.346 | 351.394 | 218 | Herman Gulch Road | Exit numbers follow I-70 |
| Clear Creek | ​ | 221.297 | 356.143 | 221 | Bakerville | |
| Clear Creek | Silver Plume | 225.719 | 363.260 | 226 | Silver Plume | |
| Clear Creek | Georgetown | 227.910 | 366.786 | 228 | Georgetown | |
| Clear Creek | ​ | 231.889 | 373.189 | 232 | US 40 west – Empire, Granby | Western end of US 40 overlap |
| Clear Creek | ​ | 223.047 | 358.959 | 223 | Lawson | Eastbound exit only |
| Clear Creek | ​ | 234.209 | 376.923 | 234 | Downieville, Lawson | |
| Clear Creek | ​ | 235.005 | 378.204 | 235 | Dumont | Westbound exit and eastbound entrance |
| Clear Creek | ​ | 237.680 | 382.509 | 238 | Fall River Road | |
| Clear Creek | Idaho Springs | 238.885 | 384.448 | 239 | I-70 BL east – Idaho Springs | |
| Clear Creek | Idaho Springs | 239.652 | 385.683 | 240 | SH 103 south / Mount Blue Sky Scenic Byway – Mount Blue Sky | Northern terminus of SH 103 |
| Clear Creek | Idaho Springs | 241.125 | 388.053 | 241 | I-70 BL west / County Road 314 | |
| Clear Creek | ​ | 242.980 | 391.038 | 243 | Hidden Valley, Central City | |
| Clear Creek | ​ | 244.260257.079 | 393.098413.729 | | I-70 – Denver | Interchange; eastern end of I-70 overlap; I-70 exit 244; no ramp to I-70 east.; mileposts change to reflect US 6 mileage |
| Clear Creek | ​ | 257.296 | 414.078 | | US 40 east to I-70 east | Eastern end of US 40 overlap |
| Clear Creek | ​ | 257.751 | 414.810 | | SH 119 north – Black Hawk, Central City | Southern terminus of SH 119 |
| Jefferson | Golden | 271.600 | 437.098 | | SH 58 east / SH 93 north – Golden, Boulder | Western terminus of SH 58 |
| Jefferson | Golden | | | | 19th Street / Lookout Mountain Road | Interchange |
| Jefferson | Golden | 273.397 | 439.990 | | SH 470 east – Colorado Springs | SH 470 exits 0A-B northbound |
| Jefferson | Golden | 275.120 | 442.763 | | US 40 (Colfax Avenue) | |
| Jefferson | Golden | 276.003 | 444.184 | — | I-70 west – Grand Junction | West end of 6th Avenue freeway; westbound exit and eastbound entrance; I-70 exit 261 eastbound |
| Jefferson | Lakewood | 276.998 | 445.785 | — | Indiana Street | |
| Jefferson | Lakewood | 277.002 | 445.792 | — | Union Boulevard / Simms Street | |
| Jefferson | Lakewood | 277.310 | 446.287 | — | SH 391 (Kipling Street) | |
| Jefferson | Lakewood | 278.795 | 448.677 | — | Garrison Street | |
| Jefferson | Lakewood | 280.830 | 451.952 | — | SH 121 (Wadsworth Blvd) | |
| Jefferson | Lakewood | 281.984 | 453.809 | — | SH 95 (Sheridan Blvd) | |
| Jefferson | Lakewood | 282.330 | 454.366 | — | Knox Court | |
| City and County of Denver | City and County of Denver | 283.86 | 456.83 | — | SH 88 (Federal Blvd) / Bryant Street | |
| City and County of Denver | City and County of Denver | 284.470209.210 | 457.810336.691 | — | 6th Avenue east | No westbound exit; I-25 exit 209A; 6th Avenue freeway continues east |
| City and County of Denver | City and County of Denver | 284.470209.210 | 457.810336.691 | — | I-25 south (US 85 / US 87 south) – Colorado Springs | West end of I-25/US 85/US 87 overlap; I-25 exit 209B; mileposts change to reflect I-25 mileage |
| City and County of Denver | City and County of Denver | 209.479 | 337.124 | 209C | 8th Avenue | Exit numbers follow I-25 |
| City and County of Denver | City and County of Denver | 210.310 | 338.461 | 210A | US 40 / US 287 (Colfax Avenue) – Downtown Denver | |
| City and County of Denver | City and County of Denver | 210.415 | 338.630 | 210B | Auraria Parkway | Eastbound exit and westbound entrance |
| City and County of Denver | City and County of Denver | 210.532 | 338.818 | 210C | 17th Avenue | Eastbound exit and entrance; westbound access is via exit 211 |
| City and County of Denver | City and County of Denver | 211.109 | 339.747 | 211 | 23rd Avenue / 20th Avenue | 20th Ave. not signed eastbound |
| City and County of Denver | City and County of Denver | 211.464 | 340.318 | 212A-B | Speer Boulevard – Downtown Denver | Signed as exits 212A (south) and 212B (north) |
| City and County of Denver | City and County of Denver | 212.096 | 341.335 | 212C | 20th Street | |
| City and County of Denver | City and County of Denver | | | — | I-25 HOV/toll lanes | South end of I-25 reversible HOV/toll lanes; eastbound exit and westbound entrance |
| City and County of Denver | City and County of Denver | 212.769 | 342.419 | 213 | Park Avenue / W. 38th Avenue | |
| City and County of Denver | City and County of Denver | 213.625274.062 | 343.796441.060 | — | I-25 north (US 87 north) – Thornton, Ft. Collins | East end of I-25/US 87 overlap; I-25 exit 214A |
| City and County of Denver | City and County of Denver | 213.625274.062 | 343.796441.060 | — | I-70 west – Grand Junction | Western end of I-70 overlap; I-70 exit 274; mileposts change to reflect I-70 mileage |
| City and County of Denver | City and County of Denver | 274.607 | 441.937 | 275A | Washington Street | No exit number eastbound; exit numbers follow I-70 |
| City and County of Denver | City and County of Denver | 275.252 | 442.975 | 275B | SH 265 north (Brighton Boulevard) | |
| City and County of Denver | City and County of Denver | 275.545 | 443.447 | 275C | York Street / Josephine Street | Eastbound exit and westbound entrance |
| City and County of Denver | City and County of Denver | 276.080290.98 | 444.308468.29 | | I-70 east | Eastern end of I-70 overlap; I-70 exit 276A; mileposts change to reflect US 6 mileage |
| Adams | Commerce City | 292.145 | 470.162 | | SH 2 south (Colorado Blvd) to I-70 east | Interchange; western end of SH 2 overlap; westbound exit and eastbound entrance |
| Adams | Commerce City | 292.743 | 471.124 | | I-270 (US 36) – Boulder, Limon | Partial cloverleaf interchange; no eastbound exit to I-270 east; I-270 exits 2A-B |
| Adams | Commerce City | 293.42 | 472.21 | | SH 2 east (Old) | Interchange; no westbound exit; eastern end of SH 2 overlap; no CDOT maintenance on this stretch of SH 2 |
| Adams | Commerce City | 293.763 | 472.766 | | Mill Road | Interchange |
| Adams | Commerce City | 294.235– 294.651 | 473.525– 474.195 | | SH 265 south | |
| Adams | Commerce City | 295.000 | 474.756 | | SH 224 west (74th Avenue) to I-76 west | |
| Adams | ​ | 296.329.483 | 476.8815.261 | | I-76 west – Arvada | Interchange; western end of I-76 overlap; westbound left exit and eastbound left entrance; I-76 exit 9; mileposts change to reflect I-76 mileage |
| Adams | ​ | 10.466 | 16.843 | 10 | 88th Avenue | Exit numbers follow I-76 |
| Adams | ​ | 11.549 | 18.586 | 11 | 96th Avenue | |
| Adams | ​ | 12.502 | 20.120 | 12 | US 85 north – Greeley, Brighton | Eastern end of US 85 overlap; no eastbound entrance |
| Adams | Brighton | 16.477 | 26.517 | 16 | SH 2 south (Sable Boulevard) / 120th Avenue – Denver International Airport | |
| Adams | Brighton | 18.079 | 29.095 | 18 | E-470 south to I-70 east – Limon, Denver International Airport | Westbound exit and eastbound entrance; E-470 exit 35 |
| Adams | Brighton | 19.723 | 31.741 | 20 | 136th Avenue | |
| Adams | Brighton | 21.081 | 33.927 | 21 | Eagle Boulevard | |
| Adams | Brighton | 22.407 | 36.061 | 22 | Bromley Lane | |
| Adams–Weld county line | Lochbuie | 25.145 | 40.467 | 25 | SH 7 west – Lochbuie, Brighton | |
| Weld | Hudson | 31.480 | 50.662 | 31 | SH 52 – Hudson, Fort Lupton | |
| Weld | Hudson | 34.412 | 55.381 | 34 | Kersey Road | |
| Weld | ​ | 38.925 | 62.644 | 39 | Keenesburg ( I-76 BS) | |
| Weld | ​ | 47.972 | 77.203 | 48 | Roggen | |
| Weld | ​ | 49.236 | 79.238 | 49 | Painter Road | Westbound exit and eastbound entrance |
| Weld | ​ | 57.219 | 92.085 | 57 | County Road 91 | |
| Weld | ​ | 59.799 | 96.237 | 60 | SH 144 east – Orchard | |
| Morgan | ​ | 63.883343.519 | 102.810552.840 | | I-76 east | Eastern end of I-76 overlap; no westbound access to I-76 east; I-76 exit 64; mileposts change to reflect US 6 mileage |
| Morgan | ​ | 345.928 | 556.717 | | SH 52 west / SH 39 north to I-76 west – Goodrich, Hoyt | Western end of SH 52 overlap; southern terminus of SH 39 |
| Morgan | ​ | 346.42566.288 | 557.517106.680 | 66B | I-76 west US 34 west – Greeley, Estes Park | Exit number is for US 34; exit numbers follow I-76; western end of I-76/US 34 overlap; I-76 exit 66A; mileposts change to reflect I-76 mileage |
| Morgan | ​ | 73.130 | 117.691 | 73 | Long Bridge Road | |
| Morgan | ​ | 75.280 | 121.151 | 75 | I-76 BL / US 34 east (SH 52 east) – Fort Morgan | Eastern end of US 34/SH 52 overlap; western terminus of I-76 BL |
| Morgan | ​ | 78.852 | 126.900 | 79 | SH 144 – Weldona | |
| Morgan | Fort Morgan | 80.139 | 128.971 | 80 | SH 52 – Raymer, Fort Morgan | |
| Morgan | Fort Morgan | 81.648 | 131.400 | 82 | Barlow Road – Fort Morgan | |
| Morgan | ​ | 85.713 | 137.942 | 86 | Dodd Bridge Road | |
| Morgan | ​ | 88.695 | 142.741 | 89 | Hospital Road | |
| Morgan | Brush | 89.643 | 144.266 | 90 | SH 71 to US 34 (I-76 BL) – Brush, Akron, Limon, Snyder | |
| Morgan | ​ | 91.693371.69 | 147.566598.18 | | I-76 east / I-76 BL west (US 34 Spur south) to US 34 / SH 71 – Brush | Eastern end of I-76 overlap; western end of I-76 BL overlap; I-76 exit 92; mileposts change to reflect US 6 mileage; US 34 Spur unsigned |
| Washington | ​ | 383.254 | 616.788 | | County Road Q to I-76 | |
| Logan | Atwood | 397.955 | 640.446 | | SH 63 south – Akron | Northern terminus of SH 63 |
| Logan | Sterling | 404.644 | 651.211 | | US 138 east (3rd Street north) / SH 14 west (Chestnut Street west) – Julesburg, Fort Collins | SH 14 is former US 6 west; western terminus of SH 138; eastern terminus of SH 14 |
| Logan | Sterling | 404.734 | 651.356 | | Front Street | Interchange; no westbound entrance |
| Logan | Sterling | 406.568 | 654.308 | | I-76 BL ends / I-76 – Fort Morgan, Julesburg | Eastern terminus of I-76 BL; eastern end of I-76 BL overlap; I-76 exit 125 |
| Logan | ​ | 406.794 | 654.671 | | SH 61 south – Otis | Northern terminus of SH 61 |
| Logan | Fleming | 424.964 | 683.913 | | SH 55 north (Logan Avenue) | Southern terminus of SH 55 |
| Phillips | Haxtun | 436.496 | 702.472 | | SH 59 – Yuma, Sedgwick | |
| Phillips | Holyoke | 454.06 | 730.74 | | US 385 (Interocean Avenue) | |
| Phillips | ​ | 467.284 | 752.021 | | US 6 east – Imperial | Continuation into Nebraska |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Electronic toll collection HOV only Incomplete access |||||||