Hours
Open 24 Hours / 7 Days
Facilities
1 available
Coordinates
46.4363, -117.4247
Alpowa Summit Rest Area US 12 Eastbound Rest: Historic Mountain Pass Stop
Alpowa Summit Eastbound Rest Area on US 12 at mile marker 413 offers more than just restrooms – you’ll find picnic tables, visitor information, and a Lewis & Clark historical marker. Located 10 miles east of Pomeroy at 2,785 feet elevation, this facility provides a proper rest stop for eastbound travelers crossing the mountain pass between the Blue Mountains and Palouse region.
Alpowa Summit Rest Area US 12 Eastbound Fast Facts
| Feature | Detail |
|---|---|
| Location | Garfield County, Washington |
| Highway | US 12, Eastbound access only |
| Mile Marker | MP 413 |
| Status | Open Verified September 28 2025 |
| Key Features | Lewis & Clark marker, picnic tables, visitor info |
| Limitations | No coffee program, no drinking water listed |
| GPS Coordinates | 46.4362794, -117.4246939 |
What Works Here
ADA-accessible restrooms function well, and picnic tables provide space for breaks and meals. Visitor information helps travelers understand the area’s significance. The Lewis & Clark historical marker commemorates the expedition’s passage through this area in May 1806 during their return trip from the Pacific.
The mountain pass location at 2,785 feet offers views of surrounding Palouse hills and Blue Mountains foothills when weather permits. This facility serves eastbound travelers much better than the limited westbound rest area across the highway.
What Doesn’t Work
No coffee program or drinking water fountains listed among amenities. Mountain elevation means weather can change quickly, affecting comfort during outdoor picnicking.
Planning Your Stop
Open 24/7 for restroom access and historical marker viewing. Plan time to read the Lewis & Clark marker if you’re interested in expedition history. Picnic tables work well for packed lunches, though bring water and supplies.
Pomeroy offers gas stations and basic services 10 miles west, while Clarkston provides full services about 20 miles east.
Traveler Tips
• Pack drinks and food – no vending or water fountains available
• Read the Lewis & Clark historical marker about their 1806 passage
• Pomeroy has gas, convenience stores, and limited dining 10 miles west
• Clarkston offers full services including major stores and restaurants
• Mountain pass elevation means cooler temperatures and potential weather changes
• Better facilities than the westbound rest area if you can access both directions
Washington State Rest Area Directory
The Washington State Rest Area Directory covers public rest stops across the state, from the Olympic Peninsula to the Columbia Plateau. Find locations with restrooms, RV dump stations, EV charging, pet areas, and ADA-accessible facilities to plan your drive across Washington with confidence.
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