I-5, northbound, southbound. 6 things listed here by WSDOT.
Where it is
northbound: I-5 milepost 267, 13.8 miles north of Bellingham
southbound: I-5 milepost 269, 6.6 miles south of Blaine
What is there
ADA Accessible Restrooms
Drinking Water
Picnic Areas
Vending Machines
Visitor Informationnorthbound only
Electric Vehicle Charging Stationsouthbound only
If it is closed
Heading southbound, the next one is Bow Hill, I-5 milepost 238, 31 miles on.
Near it
The closest of each, within 10 miles of Custer. Distances are straight-line from the rest area, not driving distance.
Gas: Petro, 1.5 miles; Electric Charging Station, 1.6 miles; ARCO, 2.7 miles; Shell, 2.7 miles; Delta Gas & Grocery, 3.7 miles
Ev charging: Tesla Supercharger, 2.9 miles; Tesla Supercharger, 7.6 miles; Electrify America, 9.7 miles; Walmart Energy, 9.7 miles; ChargePoint, 10 miles
Food: El Tapatio NW Taco Truck, 1.2 miles; Domino's, 2.7 miles; Jack in the Box, 2.7 miles; Sahara Pizza - Birch Bay, 2.7 miles; Bob's Burgers & Brew Birch Bay, 2.8 miles