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.

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.