I-10 Widening From I-295 to I-95 Design-Build

WGI was the engineer of record for this major project, which widened I-10 from west of I-295 to I-95 from a six-lane divided urban interstate to a 10-lane divided urban interstate. In addition to widening the high-volume roadway, the project reconstructed several intersections and included sidewalk additions, roadway widening, and milling and resurfacing to accommodate the interstate widening.  

The widening of I-10 includes both asphalt and concrete sections. The widening also includes widening of twelve bridges, a bridge culvert, and an off ramp. Additional structural components included the construction of MSE walls, replacement of the pedestrian culvert under I-10 at Day Avenue, and miscellaneous structural design. Drainage, ITS, lighting, landscape opportunity plans, signing and pavement marking, temporary traffic control, water and sewer design, survey, and geotechnical engineering are also required as part of this project.

Water And Sewer Relocation: WGI was responsible for designing the relocation of approximately 4,000 LF of carrier pipe consisting of water main, force main, and sewer gravity mains and manholes of varying pipe sizes ranging from 8-inches to 15-inches. The relocated pipe was constructed using the traditional open cut method and HDD of 500 LF of 10-inch HDPE and the jack-the-bore of 600 LF 18-inch steel casing. Approximately 400 LF of 24-inch Split Steel Casing was also implemented to relocate the sewer pipe.