UPDATED 12:40 P.M.
Westbound lanes have now been opened, but eastbound Hwy. 7 remains closed at the scene.
Highway 7 west of the Twin Cities metro area is closed after an early morning semi tanker trailer rolled over, spilling thousands of gallons of fuel on Wednesday morning.
MnDOT says the semi overturned on Hwy. 7 at the intersection with County Road 10, east of Mayer, which is about 20 miles from the western Twin Cities suburbs.
Based on the photo provided by the Carver County Sheriff's Office, it appears to have happened at a roundabout.
Hwy. 7 will be closed in both directions for a significant length of time, with MnDOT telling BMTN that the cleanup could take most of the day.
According to KSTP, 6,000 to 7,000 gallons of the fuel spilled from the tanker into a nearby ditch.
This story will be updated when more information is made available.