Sam Rayburn Tollway (formerly the 121 Tollway) in Collin, Dallas and Denton counties

Click the map to view a large map of the Sam Rayburn Tollway (121 Tollway) in Collin, Dallas and Denton counties.
The Sam Rayburn Tollway, formerly known as State Highway (SH) 121 and the 121 Tollway, extends northeasterly from Business 121 near the Dallas/Denton County line to U.S. 75 in Collin County, a total length of approximately 26 miles. Since 2007, the North Texas Tollway Authority (NTTA) and the Texas Department of Transportation (TxDOT) have worked together on the toll road that passes through the cities of Allen, Carrollton, Coppell, Fairview, Frisco, Lewisville, McKinney, Plano and The Colony. The Sam Rayburn Tollway became part of the NTTA System on Sept. 1, 2008.
Experience driving from Grapevine to McKinney on NTTA's Sam Rayburn Tollway.
Map of SRT/U.S. 75 Interchange Available for Viewing Construction of the SRT/ U.S. 75 (Central Expressway) interchange is now complete. View a map of the interchange's design.
More about the Sam Rayburn Tollway The NTTA has constructed the Sam Rayburn Tollway to feature six main lanes and all-electronic toll collection gantries. There is no cash option available. Motorists may use the toll road with their NTTA-issued TollTag, a Texas Tollways TxTag, or an EZ TAG from the Harris County Toll Road Authority. Customers who use the toll road without a transponder will receive a bill from the NTTA. Cameras at various entrances and exits along the toll road will take a picture of your license plate and the vehicle owner will be mailed an invoice.
The Sam Rayburn Tollway project is divided into five segments, all of which are open to traffic.
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, and all eight direct connectors were opened in phases by Nov. 14, 2011. The interchange was open to traffic ahead of schedule, less than two years after construction commenced.
For a complete listing of toll rates, please click here.
Final work continues on the SRT/DNt interchange. To get a status report on current efforts to complete the roadway, please click here to view this month’s Sam Rayburn Tollway progress report. |