Updated 9:06 p.m. ET, October 21, 2026

Colorado transportation officials broke ground Oct. 19 on the first phase of an $806-million reconstruction of Interstate 270 north of Denver that ultimately will replace 12 aging bridges and rebuild much of the six-mile highway corridor between Interstates 25 and 70.

Kiewit Infrastructure Co. is serving as construction manager/general contractor for Phase 1, which targets eight critical bridges and associated roadway between East 60th Avenue and the South Platte River. The Colorado Dept. of Transportation says contractors have not yet been selected for the project's second and third phases, with the full program scheduled to run through 2033.

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Colo. Dept. of Transportation

I-270 Corridor Improvements

CDOT and Kiewit have negotiated two Phase 1 construction packages totaling about $12 million, covering temporary barriers to protect bridge rails and earthwork to preload the underlying landfill around the bridges.…