Repairs to a bridge just west of the Blue Water Bridges in Port Huron means you can expect to see a lot more commercial traffic through the streets of downtown. The Michigan Department of Transportation will be closing a portion of westbound I-69/I-94 Tuesday at 6am, forcing traffic coming off the Blue Water Bridge to be detoured via the I-69 and I-94 business loops. MDOT says the repairs are expected to be completed by 5pm Friday. The posted detour will include Hancock Street, Pine Grove Avenue, and Griswold Streets.