Sam Rayburn Tollway (SRT)

Sam Rayburn Tollway, formerly known as State Highway 121 or 121 Tollway, extends northeast from Business SH 121 near the Dallas/Denton county line to U.S. 75 in Collin County, offering accessibility to several Metroplex destinations.  The toll road, which became part of the NTTA’s network on Sept. 1, 2008, features four lanes in each direction and all-electronic toll collection, also known as cashless tolling.  The full 26.2 miles of roadway are open to traffic, including the direct connector ramps at US 75 and at the Dallas North Tollway, and I-35E. 

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