Interstate 45 Travel Guide

I-45 replaced U.S. 75 over its entire length, although portions of U.S. 75 remained parallel to I-45 until its elimination south of downtown Dallas in 1987. At the south end of I-45, State Highway 87 (formerly part of U.S. 75) continues into downtown Galveston. The north end is at Interstate 30 in downtown Dallas, where U.S. 75 used the Good-Latimer Expressway. A sh ... more.

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