Specifications include, but are not limited to: US 287 Longmont Intersection Improvements. This project consists of improvements at three (3) intersections on US 287 (Main Street) in Longmont. The three (3) intersections included in this project are located at US 287 and Pike Rd, US 287 and Grand Ave, and US 287 and 17th Ave. The work at US 287 and Pike Road consists of widening US 287 towards the east to add an additional dedicated northbound to westbound left turn lane, new signal heads and adjustments, replacing existing ADA curb ramps, signing and striping, and constructing a new sidewalk. The work at US 287 and Grand Ave consists of singing and restriping US 287 to narrow the existing through lanes to accommodate a doweled in center median on US 287. The work at US 287 and 17th Ave consists of constructing center medians on US 287 both on the north and south side of 17th Ave, signing and striping, and adding backplates to all the signal heads at the intersection.