Lowry Bridge boat ramp provides primitive river access to the Sun River via a gravel loop with 5-6 level campsites, picnic tables, fire rings, and a vault toilet on BLM land.

The historic Lowry Bridge has a 10-ton weight limit; heavier rigs should use alternate routes.

This free, first-come, first-served access site is located about 30 minutes west of Great Falls and enforces a 3-day camping limit with a bear-proof food locker due to bear activity in the area.