Northwest Parkway Toll Road

In June 2001, a joint venture led by Kiewit Western Co., a subsidiary of Kiewit Corporation, began construction of the 9.5-mi.-long Northwest Parkway Toll Road located between I-25 on the east and U.S. Hwy. 36 on the west. At $191 million, this segment of the highly traveled route encircling the Denver metro area is one of the largest design-build highway projects in Colorado history.

Opened to traffic five weeks early on November 24, 2003, the tollway ties into another recently completed Kiewit project - E-470 Segment IV, a $250 million design-build project which involved constructing a toll plaza and 12.5 mi. of highway located on Denver's northeast perimeter.

The work included a new roadway alignment, 26 bridge structures, two ramp toll plazas, a single mainline toll plaza, two cast-in-place box culverts and 46 retaining walls. More than 100 utilities including electrical, water, natural gas, traffic signals, television, and fiber optic lines had to be relocated, as did 28 oil and gas wells located along the alignment.

Major quantities included 6.2 million cu. yd. of earthwork; 10,000 ft. of precast reinforced concrete box culverts; 450,000 cu. yd. of borrow; 230,000 tons of base aggregate; 300,000 tons of asphalt; nearly 13,000 ft. of drainage pipe; and 2.5 million sq. yd. of subgrade finishing.