 State Route 738 in Caroline, Hanover and Spotsylvania Counties, Virginia is a  secondary state highway between Richmond and Fredericksburg.It begins at State Route 646 northwest of Hanover, heading north and west to cross U.S. Route 1 at Gum Tree.From there it heads gradually west and north, mostly along an old alignment of State Route 1 (now US 1), through Coatesville, Chilesburg, and Partlow.