GORHAM - The Maine Department of Transportation will be closing Route 237 (Mosher Road) in Gorham today as crews work to repair a sinkhole that formed because of a culvert failure. The impacted location is approximately a half-mile north of the intersection of Routes 237 and 25. Crews are working to assess the damage and plan repair work. Signs will direct drivers to a detour route that uses Libby Avenue and Route 4/202.