Coleman Engineering prepared preliminary and final designs, bid documents and cost estimates for approximately 8,100-feet of 10-inch dia. ductile iron water supply pipeline in a high elevation Sierra community. The project replaced an existing 14-inch dia. Techite pipe that had reached the end of its useful life. Due to the terrain, rock, and space constraints, the existing main had to be replaced along the same alignment. A detailed construction sequencing and bypassing plan was prepared for the project to facilitate construction while maintaining service to residents. The project included the design of a jack-and bore crossing under Highway 4, and negotiation with Caltrans concerning technical requirements and an Encroachment Permit.
February 14, 2022