Specifications include, but are not limited to: The Main Street Bridge replacement project (NHDOT No. 14933; Federal No. X-A002(107)) consists of replacing the 75' clear span stone-faced concrete rigid frame bridge. The work includes replacing the structure with a 47'-7" wide, 75' clear span rigid frame, replacing the northwest wingwall, and reconstructing a limited length of the retaining walls at the three remaining corners. The masonry facing of the existing bridge shall be removed and installed on the proposed bridge. A historic canal approximately 40' west of the bridge shall be sliplined with a 5' diameter polyethylene pipe, connected to a 10' diameter drainage manhole, and daylighted near the river with a 5' diameter polyethylene pipe.