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WSDOT says drivers should expect delays while crews are working.
According to WSDOT, anywhere between 35,000 and 52,000 vehicles use the Guide each day.
WSDOT adds that these are the final closures needed to complete their 10-mile-long repaving project from Blaine to Ferndale.
The snow could make travel difficult, so drivers in those areas are being urged to slow down and use caution.
Road crews will be working to reconstruct portions of some Ferndale roads.
The final stretch of the Mount Baker Highway will not reopen until likely June if weather patterns follow previous trends.
The work is part of a project to improve a 10-mile stretch of the highway between Blaine and the Nooksack River.
Investigating troopers found that one of the drivers had failed to negotiate a curve when they took the northbound off-ramp to Main Street and went airborne.
Bellingham Public Schools says the bus was turning onto Lakeway Drive when the collision occurred.
Drivers should expect one-lane closures with flaggers guiding traffic during construction.