 State Highway 168 ( SH 168 or TX 168 ) is a short state highway located entirely within the city of Galveston in the U.S. state of Texas . The highway connects SH 87 to Coast Guard Station Galveston , on the eastern portion of Galveston Island . At just under 0 @.@ 9 miles ( 1 @.@ 4 km ) in length , the highway is the second @-@ shortest in the state , and the shortest signed highway ( <unk> , which is shorter , is officially designated but not signed ) . The road travels along the edge of residential area for most of its length before it bends northeast and runs through a small marsh . 
