Greycliff Rest Area Westbound – I-90
On I-90 westbound near Greycliff in Sweet Grass County, Montana, Greycliff Rest Area offers a place to stop. Reported truck parking: 19 spaces. The next westbound stop is Homestake Pass Rest Area, about 146 miles further along I-90.
Location map
Marker shows recorded coordinates, not an entrance or approved driving route. Follow highway signs.
Open directionsReported parking capacity
Reported capacity from the 2019 federal truck parking survey (FHWA Jason's Law). This is not real-time vacancy information.
Facilities and amenities
Unknown (not documented in the sources): Family restroom, Accessible facilities, Picnic tables, Pet area, Vending machines, Public phone, RV dump station, EV charging.
A reported facility does not guarantee current availability.
About this rest area
Drivers heading west on I-90 near Greycliff, Montana, can take a break at the Greycliff Rest Area. Its current operating status has not been verified. Check the Montana Department of Transportation again before stopping: operating conditions can change.
Location and driving direction
The rest area sits on the westbound side of I-90 near Greycliff in Sweet Grass County. The recorded position is around mile marker 381.
The eastbound lanes have their own facility, Greycliff Rest Area; make sure the entrance matches your direction of travel.
Further along I-90, Homestake Pass Rest Area follows after roughly 146 miles.
Parking and amenities
Truck parking: 19 reported spaces (the 2019 federal truck parking survey (FHWA Jason's Law)).
Listed amenities include:
- Restrooms
- Drinking water
Space counts describe reported capacity, not live parking availability. Individual facilities can be closed temporarily.
How long can you stay?
Montana allows overnight parking at rest areas for up to 12 hours, one space per vehicle; camping is prohibited. Signs posted at the rest area take precedence. Source: Montana DOT (checked November 2026).
Map and coordinates
Recorded coordinates: 45.736018, -109.757397. Use them as a reference only; follow the posted signs to the entrance.
Frequently asked questions
Is this rest area on I-90 Westbound?
Yes. The federal truck parking inventory record identifies it as the westbound facility on Interstate 90 near Greycliff. The eastbound lanes have a separate facility.
How many truck spaces are there?
The 2019 federal truck parking survey (FHWA Jason's Law) lists 19 truck parking spaces at this facility. This does not indicate how many are currently free.
Are there restrooms and drinking water?
Yes, both are included in the official amenities listing. Check current conditions before travel.
How long can I park here?
Montana allows overnight parking at rest areas for up to 12 hours, one space per vehicle; camping is prohibited. Posted signs on site apply.
Where is the next rest stop?
Homestake Pass Rest Area, about 146 miles further along I-90 by the official mile markers.