On Tuesday, April 11 guardrail replacement work will begin at approximately 7 A.M. in the vicinity of 94 College Road.  Work in this area is expected to last less than two hours.   Work will commence at about 9 A.M. in the area opposite 970 Sudbury Road. Traffic in these areas will be limited to a single lane with an alternating traffic pattern while the work is taking place. Motorists, pedestrians and bicyclists are encouraged to seek alternate routes as delays can be expected. If you have any questions, please contact Concord Public Works Highway and Grounds Division at 978-318-3220.