The New Hampshire Department of Transportation is inspecting the Sarah Mildred Long Bridge that connects Portsmouth and Kittery, Maine.
The inspection is scheduled to start Monday. The bridge carries U.S. Route 1 bypass over the Piscataqua River between the two states.
The bridge will have lane closures as needed and as weather permits from 8 a.m. to 3:30 p.m. daily for up to 11 weekdays.
Flag persons, electronic message signs and warning signs will be used to notify motorists of the lane closures. Motorists traveling between Portsmouth and Kittery are asked to use alternate routes if possible to avoid delays.
In the event of adverse weather, the inspection work may be delayed until the next suitable workday.
Work to replace the 73-year-old bridge is expected to start in September 2014.