Within Bighorn Canyon National Recreation Area, Grapevine Campground provides National Park Service-managed camping on open terrain near the lake. The campground requires drive-in access but features rough road conditions that may challenge some vehicles.
Pets are not permitted at this established campground, making it distinct from many other recreation area sites. The lakeside location offers direct water access for campers interested in boating or fishing activities. Afterbay Campground sits just south for visitors seeking pet-friendly alternatives in the same recreation area.
Description
- Near Fort Smith, Montana - Open All Year! - $18 per night fee (50% off with Senior Pass) - 14 RV and tent sites are located on the north shore of Afterbay lake - RV sites are back in (not pull through) - All sites are handicapped accessible, have fire rings, and picnic tables - Vault toilets are accessible - There are no RV hookups - Trash cans available seasonally (May-Oct) - RV dump station and drinking water available across Afterbay lake near the Headquarters building and Afterbay Campground
RV Road Trip Guides
Map & DirectionsGrapevine Campground is located in Montana near Fort Smith
Directions
Take 313 through the town of Fort Smith, MT. Follow the brown and white direction signs. Turn right on Rte 12 and drive across the afterbay dam. Continue on Rte 12 for approximately 1.6 miles. Turn left into Grapevine Campground.
Coordinates
45.318046 N
107.940672 W
Connectivity
- T-MobileNo Coverage
- VerizonNo CoverageVerified by 2 usersLast on 5/11/26
- AT&TNo Coverage
Connectivity
- T-MobileNo Coverage
- VerizonNo CoverageVerified by 2 usersLast on 5/11/26
- AT&TNo Coverage
Access
- Drive-InPark next to your site
Site Types
- Tent Sites
Features
Drive Time
- 1 hr 49 min from Billings, MT
- 3 hrs 30 min from Bozeman, MT
- 3 hrs 59 min from Casper, WY
- 4 hrs 54 min from Helena, MT





