Three Dollar Bridge is a walk-wade only fishing access site on the Madison River featuring approximately 100 acres of public land with roughly 2 miles of direct river access, located 39 miles south of Ennis on Highway 287.

The site includes a vault toilet and parking for 15-20 vehicles, with easy winter access via a 0. 5-mile walk from Highway 287.

The river here is characterized by boulder-filled riffles and fast-moving water ideal for wade fishing, though it is not suitable for boat traffic.