 The business route was created in 1992 when US 90 was realigned off the route between Beltway 8 and FM 2100.The portion of the business route between I-610 and Beltway 8 remained concurrent with US 90 until the completion of the current US 90 along the Crosby Freeway in January 2011.

Business U.S. Highway 90-Y or Bus.US 90-Y begins at Exit 874A of the combined route of Interstate 10 and US 90 on the west side of Orange in Orange County.