Twin Bridges South Boat Access offers a concrete boat ramp with restroom facilities, picnic areas, and camping available for boaters on the South Fork of the Snake River at river mile 46. 2. A $3.

00 expanded amenity fee applies to help maintain facilities, and overnight camping requires a free self-issue permit with designated campsites available on a first-come, first-served basis between Conant and Byington accesses.