Specifications include, but are not limited to: The Crosswalk Improvements Project consists of the following tasks: Colby Stree t - Install approximately 615 SY cast-in-place concrete sidewalk with 1,100 linear feet of granite curb., Adams Street - Install approximately 870 SY cast-in-place concrete sidewalk (1,545 linear feet), Winchester Street - Install approximately 150 SY cast-in-place concrete sidewalk (530 linear feet), River Street - Install three (3) cast-in-place concrete sidewalk ramps at the intersection of Rivers Street and Leverett Street. Install 90 linear feet of new granite curbs, Keene Dillant-Hopkins Airport Termina l - Remove existing concrete walkway and replace with 145 SY of cast-in-place concrete sidewalk and 140 linear feet of straight granite curb