Carollo, in joint venture, designed a major water transmission project for the City of Salt Lake City that includes approximately 19,800 feet of 72-inch and 5,700 feet of 66-inch pipe. The transmission main, which is a replacement of an existing line built in 1906, delivers water from the Big Cottonwood Water Treatment Plant and the Metropolitan Water Treatment Plant to Salt Lake City’s water distribution system and storage facilities. Salt Lake City replaced approximately 8,000 feet of the original line in the late 1960s, leaving 25,000 feet to be designed in this project. The project’s design provided flexibility in bidding through development of three separate construction contracts and two alternative pipe materials, steel and pre-stressed concrete.

Carollo’s engineering services for this project included a feasibility study, field survey, utilities research, soils and seismic reports, an alignment analysis, easement and right-of-way requirements, a hydraulic analysis, piping selection, project coordination, and preparation of plans and specifications.