I-5 and Highway 217 Reconstruction - Tigard, Ore.
Using an A+B contract, the Oregon Department of Transportation selected Kiewit to reconstruct the intersection of Interstate 5 and Highway 217. This $38 million project relieved traffic congestion as exiting northbound I-5 traffic attempted to merge with the heavily traveled Highway 217, which provided the only freeway access into western Portland. The reconstruction work involved merging northbound I-5 with westbound Highway 217 via a fly-over ramp.
Project elements included construction of a two-lane, 1,500-foot-long northbound fly-over ramp and a 250-foot-long, 15-foot-wide pedestrian bridge, both spanning I-5. Also included were northbound I-5 auxiliary lanes leading to the fly-over bridge; a new, wider ramp from eastbound Highway 217 to southbound I-5; nine retaining walls; and two soundwalls.
A significant aspect of the reconstruction involved splitting Highway 217. This allowed the eastbound Highway 217 to southbound I-5 lanes to be realigned and relocated, while also providing the space required for the bridge footings, columns, and I-5 widening.
This project required more than 131,000 cubic yards of excavation and nearly 100,000 tons of asphalt paving. On June 15, 2001, the northbound I-5 fly-over to westbound Highway 217 opened to traffic. Six days later, the project was declared substantially complete, 12 percent ahead of the project's aggressive 475-day schedule, and 54 percent earlier than the owner's 913-day maximum schedule.