Lawrence Street Bridge Over Blackwater River, Andover, NH

Description: Replacing the existing 58' long, single-span bridge. The existing bridge consists of steel stringer superstructure with reinforced concrete deck supported on concrete faced stone masonry abutments. The work includes replacing the existing bridge with a 110' long steel girder bridge with concrete deck superstructure supported on semi-integral abutments. The replacement bridge will have an out-to-out deck width of 32' carrying two 12' wide travel lanes and a 5' sidewalk. Traffic will be maintained during construction on a temporary bridge constructed immediately downstream of the existing bridge. Roadway approach reconstruction limits are approx. 745'.