Walbridge 100th


2 Projects Found

Project Archives

Detroit Metropolitan Airport, Twin Bay Boeing 747 Hangar

Owner: Northwest Airlines  |  Size: 128,000 square feet

Seattle-Tacoma International Airport, 747 Maintenance Hangar and Cargo Facility

Owner: Northwest Airlines  |  Size: 170,000 square feet

Detroit Metropolitan Airport, Twin Bay Boeing 747 Hangar

Project Details

Owner: Northwest Airlines

Market: Airport - Maintenance

Location: Romulus, MI

Service: Construction Management-At-Risk

Size: 128,000 square feet

Design Partner: Skillings Ward Magnusson

Project Summary

Northwest Airlines required a new maintenance hangar in order to service an increasing number of international flights, including direct flights to Asia utilizing Boeing 747s. The project scope combined more than 110,000 square feet of new space, including maintenance shop areas, administrative areas, and locker rooms. The clear space in the hangar is 489 feet.

As prime contractor, Walbridge provided a partnering role to the owner and design team. Walbridge engaged the structural engineering services of a third-party firm to conduct a value-engineered redesign prior to contract award. This firm’s innovative approach to long-span hangar design yielded a building a third lighter than the original design – saving 1,000 tons of steel. The value-engineered redesign along with changes to mechanical systems prior to contract award saved the client $1.2 million, while maintaining the originally scheduled completion date. In addition, the aircraft layout within the hangar allowed a narrow body aircraft (B-737 style) to fit between two B-747 aircraft, thus increasing the use of the area without increasing the hangar area or the span. Construction cost for the project was $26.3 million.