U.S. Route 77 (US 77) is a part of the United States Numbered Highway System that runs from the Veterans International Bridge in Brownsville to Sioux City, Iowa. In Texas, the road runs south-north for from the International border with Mexico to the Oklahoma state line north of Gainesville. The highway is being upgraded to a freeway near Corpus Christi to connect to the freeway part of the highway in Raymondville as part of future I-69. A freeway in Robstown is already signed as part of I-69. From Waco to the Oklahoma state line, US 77 overlaps or runs parallel to I-35/I-35E.