# Sam Rayburn Tollway

The Sam Rayburn Tollway (formerly the State Highway 121 Tollway) is a controlled-access toll road operated by the North Texas Tollway Authority that runs from Grapevine to McKinney. Its frontage roads are signed SH 121.
The original portion of the toll road from Business 121 near Coppell to FM 2281 opened in May 2006, and toll collection started December 1 of that year. The tolled portion extended to Hillcrest Road in Plano/Frisco on August 31, 2008. The tollway was extended to Custer Road on September 1, 2009, and again to Hardin Boulevard in McKinney on October 1, 2009.
The tollway (formerly named 121 Tollway) was renamed in honor of Sam Rayburn at a North Texas Tollway Authority meeting on March 16, 2009.
The tollway also currently features two five-level stack interchanges, at Dallas North Tollway and I-35E.

## History

The Sam Rayburn Tollway project was divided into five segments, all of which have been completed.
* Segment 1, from Denton Tap Road to Old Denton Road, opened to traffic in July 2006.
* Segment 2, which runs from Old Denton Road to Hillcrest Road, officially opened to traffic on September 1, 2008, when NTTA took full responsibility for Segments 1 and 2 as well as the operation, maintenance and construction of the remaining segments of the Sam Rayburn Tollway.
* NTTA contractors began work on Segment 3 of the Sam Rayburn Tollway in March 2008. On September 1, 2009, the NTTA opened the main lanes from Hillcrest Road to just east of Custer Road. On September 29, 2009, the North Texas Toll Authority opened the main lanes from just east of Custer Road to west of Hardin Boulevard.
* Segment 4 encompasses the Sam Rayburn Tollway/US 75 interchange, from west of Hardin Boulevard to just east of U.S. 75. Construction on this portion of the corridor began in December 2008. Four major direct-connecting ramps were open to traffic in December 2010. The last two ramps were opened in March 2011.
* The Sam Rayburn Tollway/Dallas North Tollway interchange is referred to as Segment 5. The North Texas Toll Authority began construction on Segment 5 in February 2010. It was completed in 2012.

## Exit list

Almost all exits include access to SH 121, which follows the frontage roads. Due to the nearly continuous frontage road, most exits on the Tollway serve more than one roadway. All exits are unnumbered.
| County | Location | mi | km | Destinations | Notes |
| Denton | Lewisville | 0.0 | 0.0 | SH 121 south / Bus. SH 121 north – DFW Airport, Ft Worth, Lewisville | Continues south as SH 121; southern terminus of Business SH 121 |
| Dallas | Coppell–Lewisville line | 0.9 | 1.4 | SH 121 north / Denton Tap Road | No southbound signage for SH 121 |
| Denton | Lewisville | 1.6 | 2.6 | Denton Tap Main Lane Gantry | Denton Tap Main Lane Gantry |
| Denton | Lewisville | 2.2 | 3.5 | MacArthur Boulevard | Tolled southbound exit and northbound entrance |
| Denton | Lewisville | 3.2 | 5.1 | I-35E – Denton, Dallas | Tolled exit to I-35E north; Exits 447A-448A (I-35E) |
| Denton | Lewisville | 3.5 | 5.6 | SH 121 south / Lake Vista Drive | Southern terminus of the concurrency with SH 121; southbound exit and northbound entrance |
| Denton | Carrollton | 4.5 | 7.2 | Marchant Boulevard, Huffines Boulevard | |
| Denton | Carrollton | 5.0 | 8.0 | SH 121 north / Hebron Parkway | Northern terminus of the concurrency with SH 121; no SH 121 signage southbound |
| Denton | Carrollton | 6.4 | 10.3 | Carrollton Parkway | Tolled northbound exit and southbound entrance |
| Denton | Lewisville | 7.2 | 11.6 | FM 544 (Parker Road) | Tolled northbound exit and southbound entrance; southbound exit is via the FM 2281 interchange |
| Denton | Lewisville | 7.8 | 12.6 | FM 2281 (Old Denton Road) | Tolled northbound exit and southbound entrance; also signed for FM 544 southbound |
| Denton | Lewisville | 8.1 | 13.0 | Bus. SH 121 south | No direct northbound exit; northern terminus of Business SH 121 |
| Denton | Lewisville | 8.8 | 14.2 | Standridge Drive / Castle Hills Drive | Tolled interchange |
| Denton | Lewisville | 9.1 | 14.6 | Josey Main Lane Gantry | Josey Main Lane Gantry |
| Denton | Lewisville | 9.6 | 15.4 | FM 423 north (Main Street (The Colony)) / Josey Lane (Lewisville) | Tolled interchange; southern terminus of FM 423 |
| Denton | The Colony | 10.5 | 16.9 | Paige Road / Plano Pkwy | Southbound exit via South Colony Boulevard interchange |
| Denton | The Colony | 11.2 | 18.0 | S Colony Boulevard / Nebraska Furniture Mart Drive | South Colony Boulevard not accessible northbound; tolled southbound exit and northbound entrance |
| Denton | The Colony | 12.0 | 19.3 | Spring Creek Parkway | Tolled southbound exit and northbound entrance |
| Collin | Plano–Frisco line | 12.9 | 20.8 | Legacy Drive | |
| Collin | Plano–Frisco line | 13.0 | 20.9 | Dallas Parkway | Southbound exit is via the Parkwood Boulevard interchange |
| Collin | Plano–Frisco line | 13.8 | 22.2 | Dallas North Tollway | |
| Collin | Plano–Frisco line | 14.3 | 23.0 | Parkwood Boulevard | Tolled northbound exit; also signed for Dallas Parkway southbound |
| Collin | Plano–Frisco line | 14.9 | 24.0 | SH 289 (Preston Road) | |
| Collin | Plano–Frisco line | 16.0 | 25.7 | Hillcrest Road (Frisco)/Rasor Boulevard (Plano), Ohio Drive | Tolled northbound exit and southbound entrance; Ohio Drive signed at SH 289 exit southbound |
| Collin | Plano–Frisco line | 17.3 | 27.8 | Coit Road | Tolled northbound exit and southbound entrance; to Centennial Medical Center |
| Collin | Plano–Frisco line | 18.4 | 29.6 | Independence Parkway | Tolled northbound exit and southbound entrance |
| Collin | Plano–Frisco– Allen–McKinney quadripoint | 19.6 | 31.5 | FM 2478 (Custer Road) | Tolled northbound exit and southbound entrance; no direct southbound exit (signed at Exchange Parkway) |
| Custer Main Lane Gantry ||
| Collin | Allen–McKinney line | 20.3 | 32.7 | Exchange Parkway (Allen)/Craig Ranch Parkway (McKinney) | Tolled southbound exit and northbound entrance |
| Collin | Allen–McKinney line | 21.2 | 34.1 | Alma Drive (Allen)/Alma Road (McKinney) | Tolled southbound exit and northbound entrance; no direct northbound exit (signed at Exchange Parkway), Alma Drive is signed on the exit sign. |
| Collin | Allen–McKinney line | 22.2 | 35.7 | Stacy Road | Tolled southbound exit and northbound entrance |
| Collin | Allen–McKinney line | 22.9 | 36.9 | Lake Forest Drive (McKinney)/Watters Road (Allen) | Tolled southbound exit and northbound entrance |
| Collin | Allen–McKinney line | 23.8 | 38.3 | Hardin Boulevard (McKinney)/Chelsea Boulevard (Allen) | Tolled southbound exit and northbound entrance |
| Collin | Allen–McKinney line | 24.2 | 38.9 | Frontage Road | Northbound exit only; to US 75 frontage roads |
| Collin | Allen–McKinney line | 24.5 | 39.4 | US 75 / SH 121 north – Sherman, Dallas | Exit 38C (US 75) |
| Collin | Allen–McKinney line | 25.2 | 40.6 | To SH 5 / Medical Center Drive | To Medical City McKinney; continues north as Spur 399 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Electronic toll collection Incomplete access ||||||