State Highway 170 (SH 170), also known as the Alliance Gateway Freeway, is a Texas state highway in the northern suburbs of Fort Worth in the Alliance area.

[2] This route was renumbered SH 33 on October 26, 1954, to coincide with OK 33, with which it connects.

[4] TxDOT and the NTTA held a public hearing in Roanoke about the proposed toll road on February 26, 2015.

[5] The main lanes between I-35W and SH 114 opened to traffic on March 18, 2024.

[6] The North Texas Tollway Authority (NTTA) planned to build tolled main lanes by 2015 and will extend the highway west to US 287/US 81, and, eventually, ultimately to extend it to the Jacksboro Highway (SH 199), but it did not occur.