U.S. Federal Route 75 runs north-south along the North Central Expressway in Dallas. A portion of this near Downtown Dallas, runs along the un-signed Interstate 345. U.S. Rt. 75 passes through the following towns in Dallas County. Dallas Richardson U.S. Rt. 75 is multi-plexed in Dallas County. Interstate 345, at Dallas. U.S. Rt. 75 crosses the following highways in Dallas County. Interstate 30, at Dallas. Interstate 45, at Dallas. Interstate 345, at Dallas. U.S. Rt. 67, at Dallas. Interstate 345, at Dallas. Texas Spur State Route 366, at Dallas. Texas State Loop 12, at Dallas. Interstate 635, at Dallas.
BGS on SB I-35E/U.S. Rt. 77 in Dallas. A guide marker on EB TX St SP 366. SB I-345/U.S. Rt. 75 at I-30/45; U.S. Rt. 67. Southern end marker.