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The Sam Rayburn Tollway (formerly the State Highway 121 Tollway) is a controlled-access toll road operated by the North Texas Tollway Authority [3] that runs from Grapevine to McKinney. Its frontage roads are signed SH 121 .
East of Coppell, the highway functions as the frontage road for the Sam Rayburn Tollway, a toll road that runs northeast to McKinney. From McKinney to Melissa, the state highway is concurrent with US 75 and the North Central Expressway. Northeast of Melissa, SH 121 is a less-traveled roadway often referred to as the Sam Rayburn Highway.
Spur 399 begins where SH 121 branches off the Sam Rayburn Tollway, to merge with the Central Expressway. After the interchange, the highway passes a few empty commercial building lots, before passing the Collin Higher Education Center to the north, and the Medical Center of McKinney to the south. The frontage roads then, depending on the ...
Dallas Parkway (future Dallas North Tollway) Western terminus: County Road 52, County Road 1117: 1.8: 2.9: SH 289 (Preston Road) County Road 88 County Road 87 4.8: 7.7: FM 2478 – Weston, McKinney: Current eastern terminus of phase 3 County Road 126: Planned interchange (phase 3) Weston: FM 543 – Weston, McKinney: Planned interchange (phase 3)
Sam Rayburn Tollway (part) A short spur freeway traveling from SH 121-Central Expressway (US 75) interchange to SH 5 south of downtown McKinney. Soon to become part of Sam Rayburn Tollway. [30] [31] Spur 408 Patriot Parkway A freeway passing through semi-rural southwest Dallas, connecting to Loop 12 on the north and terminating at I-20 in the ...
It then interchanges with the Sam Rayburn Tollway, becoming concurrent with SH 121 and then heads through McKinney and interchanging with US 380. The stretch through McKinney is largely unchanged from its original design except for its intersection at the Sam Rayburn Tollway. [18] to replace the original interchange. Plans to upgrade the ...
The North Texas Tollway Authority (NTTA) is a not-for-profit government organization [2] that maintains and operates toll roads, bridges, and tunnels in the North Texas area. Functioning as a political subdivision of the State of Texas under Chapter 366 of the Transportation Code, the NTTA is empowered to acquire, construct, maintain, repair ...
McKinney is a city in and the county seat of Collin County, Texas, ... a toll road administered by the North Texas Tollway Authority that runs to Dallas/Fort Worth ...