The Afterbay boat ramp is a popular launch site on the Bighorn River near Fort Smith, Montana, featuring a recently improved concrete ramp with adequate parking and amenities including vault toilets and an RV dump station.

The ramp serves as the primary access point for drift boats and anglers, with a temporary single-lane gravel launch available during maintenance periods.

Located adjacent to Afterbay Campground, the facility accommodates high-volume traffic from recreational vehicles with trailers.