Alignment Chosen for Dallas North Tollway Extension
The North Texas Tollway Authority’s board of directors chose an alignment for the phase 4B/5A extension of the Dallas North Tollway that straddles the Collin-Denton county line and extends 11.9 mi from FM 423 in Collin County to FM 121 in Grayson County.
NTTA has continued to extend the original Dallas North Tollway for several decades as communities to the north have grown and requested expansions. When complete, the 4B/5A extension will be a limited-access toll road with six main lanes and four frontage road lanes. It’s expected to cost $864 million.