Insituform, under contract with the Town of Andover, is performing critical maintenance work on a sewer pipe on Stevens St and North Main St beginning Tuesday, September 2nd, occurring from 7am to 9pm. This work is expected to last approximately one week and will involve adjustments to traffic patterns on Stevens St and North Main St. Emergency vehicles will not be prevented from responding to calls. Please follow detour signage and directions from safety personnel. Seek an alternative route if possible.