Location: IH 30 and US-80, Dallas Just before we enter Mesquite and just after Loop 12, exit for US-80. This is the western terminus of US-80, a route that formerly went all the way to San Diego N to I-635, S to TX-78 E to I-635, W to TX-78 E to I-635 N to TX-78, … Continue reading U.S. Route 67, TX-12 Loop to US-80