Lighting improvements to the Route 2 Mainline and Ramps beginning in Cambridge at Alewife Brook Parkway and ending in Lexington. The project includes, 4 new lighting load centers, 3 high mast towers with new foundations, installation of 211 new light poles with LED luminaries, over 60 rock sockets drilled into ledge for foundation installation, 4 Closed Circuit Television Cameras (CCTV), directional drilling under the highway, over 50,000 feet of new conduit, and new concrete median barrier.