Hoover Dam, the Depression-era engineering marvel, turns 75 this month. While its new bridge crossing is set to open in November, the concrete monolith also is marking a dubious milestone this year—a 54-year low point for its water level, which threatens the dam’s hydroelectric output. Photo: Courtesy of Southern Nevada Water Authority Lake Mead reservoir level is at its lowest point in 54 years, putting electricity generation capability at risk. Engineered mitigation measures include a third water-intake tunnel and new turbine design. Lake Mead dipped to 1,085 ft in September, less than 40% of its capacity, following a decade of
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.