Sam Rayburn Tollway

The Sam Rayburn Tollway (formerly the State Highway 121 Tollway) is a tollway operated by the North Texas Tollway Authority[3] that runs from Grapevine to McKinney. Its frontage road are signed State Highway 121.

Sam Rayburn Tollway marker

Sam Rayburn Tollway
State Highway 121 Tollway
Route information
Maintained by NTTA
Length25.2 mi[1][2] (40.6 km)
Major junctions
Southwest end SH 121 in Lewisville
  I-35E / US 77 in Lewisville
Dallas North Tollway in Plano
Northeast end US 75 / SH 121 / Spur 399 in McKinney
Highway system

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 Interstate 35E/US 77.


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 Sept. 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 SRT.
  • NTTA contractors began work on Segment 3 of the SRT in March 2008. On Sept. 1, 2009, the NTTA opened the main lanes from Hillcrest Road to just east of Custer Road. On Sept. 29, 2009, the NTTA opened the main lanes from just east of Custer Road to west of Hardin Boulevard.
  • Segment 4 encompasses the Sam Rayburn Tollway/U.S. 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 NTTA began construction on Segment 5 in February 2010. It was completed in 2012.

Exit listEdit

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.

    SH 121 south / Bus. SH 121 north – D/FW Airport, Fort Worth, Lewisville
Continues south as SH 121; southern terminus of SH 121 Business
DallasCoppellLewisville line0.91.4  SH 121 north / Denton Tap RoadNo southbound signage for SH 121
DentonLewisville1.62.6Denton Tap Main Lane Gantry
2.23.5MacArthur BoulevardTolled southbound exit and northbound entrance
3.25.1  I-35E (US 77) – Denton, DallasTolled exit to I-35E north; exits 447A-448A on I-35E
3.55.6  SH 121 south / Lake Vista DriveSouthern terminus of SH 121 concurrency; southbound exit and northbound entrance
Carrollton4.57.2Marchant Boulevard / Huffines Boulevard
5.08.0  SH 121 north / Hebron ParkwayNorthern terminus of SH 121 concurrency; no SH 121 signage southbound
6.410.3Carrollton ParkwayTolled northbound exit and southbound entrance
Lewisville7.211.6  FM 544 (Parker Road)Tolled northbound exit and southbound entrance; southbound exit is via FM 2281 interchange
7.812.6  FM 2281 (Old Denton Road) – CarrolltonTolled northbound exit and southbound entrance; also signed for FM 544 southbound
  Bus. SH 121 south
No direct northbound exit; northern terminus of SH 121 Business
8.814.2Standridge Drive / Castle Hills DriveTolled interchange
9.114.6Josey Main Lane Gantry
9.615.4  FM 423 north (Main Street (The Colony)) / Josey Lane (Lewisville)Tolled interchange; southern terminus of FM 423
The Colony10.516.9Paige Road / Plano ParkwaySouthbound exit via South Colony Boulevard interchange
11.218.0South Colony Boulevard / Nebraska Furniture Mart DriveSouth Colony Boulevard not accessible northbound; tolled southbound exit and northbound entrance
12.019.3Spring Creek ParkwayTolled southbound exit and northbound entrance
CollinPlanoFrisco line12.920.8Legacy Drive
13.020.9Dallas ParkwaySouthbound exit is via Parkwood Boulevard interchange
13.822.2  Dallas North Tollway
14.323.0Parkwood BoulevardTolled northbound exit; also signed for Dallas Parkway southbound
14.924.0  SH 289 (Preston Road)
16.025.7Hillcrest Road (Frisco) / Rasor Boulevard (Plano) / Ohio DriveTolled northbound exit and southbound entrance; Ohio Drive signed at SH 289 exit southbound
17.327.8  Coit RoadTolled northbound exit and southbound entrance; to Centennial Medical Center
18.429.6Independence ParkwayTolled northbound exit and southbound entrance
AllenMcKinney quadripoint
19.631.5  FM 2478 (Custer Road)Tolled northbound exit and southbound entrance; no direct southbound exit (signed at Exchange Parkway)
Custer Main Lane Gantry
AllenMcKinney line20.332.7Exchange Parkway (Allen) / Craig Ranch Parkway (McKinney)Tolled southbound exit and northbound entrance
21.234.1Alma 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.
22.235.7Stacy RoadTolled southbound exit and northbound entrance
22.936.9Lake Forest Drive (McKinney) / Watters Road (Allen)Tolled southbound exit and northbound entrance
23.838.3Hardin Boulevard (McKinney) / Chelsea Boulevard (Allen)Tolled southbound exit and northbound entrance
24.238.9Frontage RoadNorthbound exit only; to US 75 frontage roads
24.539.4   US 75 / SH 121 north – Sherman, DallasExit 38C on US 75
25.240.6   To SH 5 / Medical Center DriveTo Medical City McKinney; continues north as Spur 399
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ a b Google (June 9, 2019). "Sam Rayburn Tollway" (Map). Google Maps. Google. Retrieved June 9, 2019.
  2. ^ "Sam Rayburn Tollway Update". Archived from the original on October 26, 2011. Retrieved July 26, 2012.[self-published source]
  3. ^ "Sam Rayburn Tollway". Retrieved July 26, 2012.

External linksEdit

KML is from Wikidata
  • A YouTube video sponsored by the NTTA as the official tour (from Grapevine to McKinney)