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Sustainability case study
This project was for the construction of 3.1 miles of four-lane divided expressway containing seven multi-span cast-in-place box girder bridges including one interchange, one undercrossing, and a railroad overhead, as well as two multi-span precast I-girder bridges crossing the New River.
The scope of work included the construction of four lane divided expressway containing seven multi-span cast-in-place box girder bridges including one interchange, one undercrossing, and a railroad overhead, as well as two multi-span precast I-girder bridges crossing the New River. Work involved in the project includes: sewer and water relocation, earthwork, storm water drainage, grading,Portlandconcrete cement and asphalt concrete pavement, steel pile foundations, wick drains and bridge structures.
The Project required 943,000cy of roadway excavation; 743,000cy of imported fill; 200,000cy of asphalt base and sub-base; 66,000 tons of asphalt concrete; 40,000cy of Portland concrete cement; 12,000cy of structural concrete; 6,200lf of cast-in-steel-shell piling; 3,250,000lbs of reinforcing steel;9,800lf of storm drain pipe; and 430,000lf of drainage. The contract duration is 650 days from the notice to proceed.
Jay WeisbergerVice President, Communications WestSkanska USA Inc.+1 206 494 5469
E-mail Jay Weisberger
Market segment: Roads, Civil, Asphalt works, Bridges, Piling/foundation, Railways
Concept: Skanska Values, Green, Building Information Modeling/ Virtual Design & Construction
2009 Partnering-in-Motion Gold Award for Caltrans District 11
Highway 78, Brawley Bypass utilized BIM during all phases of construction. It was used to check early quantities and design logistics. This helped in staging, balancing materials and constructing the state appointed temporary construction easements. The final BIM model was used to check intersections, vertical curves and grade breaks in the office before it went to the field. Loaded on the motor graders, it was used in prepping the road bed's foundation treatments and roadway structural sections and finishing grading of the sub-base surfaces. CAT D9 dozers with machine guidance were used to build and complete fill-slope work and embankments, and field personnel used handheld GPS (Rover) to check quantities and set and check grades all loaded with the BIM model.