State Park / State Forest · Idaho
Three Island Crossing State Park Campground
Near Glenns Ferry, Idaho — $25–$45 a night and rigs to 50 ft by our record.
Quick answer
Can I bring an RV to Three Island Crossing State Park Campground?
What length RV fits Three Island Crossing State Park Campground? Our record: Three Island Crossing State Park Campground takes rigs up to 50 ft. 9 months ahead via ID State Parks portal. Book on the operator's own page.
- Open: Our record: Year-round.
Camping at Three Island Crossing State Park Campground? Tell us the nights.
One email when an Idaho owner lists a rig for those nights.
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On the ground
Oregon Trail historic crossing site. The Oregon Trail History and Education Center on-site is free with camping. Snake River sites face west — sunset on Camas Prairie hills.
From our record
- Open
- Year-round
- Booking
- 9 months ahead via ID State Parks portal
- On site
- Water + electric, Showers, Pets allowed, Fire rings
- Camping styles
- RV-friendly, Tent camping
What a posted rig limit measures
- Pad length — the rig plus anything it tows
- Height — what the branches and the awning need
- Turning arc — the swing off the loop road
Keep planning Idaho
More Idaho campgrounds
Around Glenns Ferry
The rest of the Idaho trip
Three Island Crossing State Park Campground questions
- What length RV fits Three Island Crossing State Park Campground?
- Our record: Three Island Crossing State Park Campground takes rigs up to 50 ft.
- When is Three Island Crossing State Park Campground open?
- Our record: Year-round.
- How do I reserve a site at Three Island Crossing State Park Campground?
- 9 months ahead via ID State Parks portal. Book on the operator's own page.
Before you go
Idaho rules for RV renters
Idaho rules
Verified 2026-05-10
- Rental tax
- 7%
- Min driver age
- 21+ · 25+ Class A
- Gravel roads
- Allowed, disclose
- Generator quiet hours
- 22:00-07:00
- Alcohol in cabin
- No open container
- Dump station
- Standard