Broomfield, Colorado

Lowell Blvd. to West 120th Avenue

Hamilton worked with the City of Broomfield to construct a 125-foot precast double arch bridge with decorative pedestrian steel railing and a 100-foot-long multi-modal underpass. 

The project's scope involved widening and reconstructing a mile-long road and reconstructing the Nissen Channel to meet floodplain requirements. Channel excavation required diverting water and phasing construction activities.

Working adjacent to existing wetlands presented challenges. Work required managing Preble mice, dewatering and treating groundwater, landscaping, native seeding, and wetland restoration.
Major Project Elements:
  • Bridge Construction
  • Erosion Control: SWMP controls, landscaping
  • Earthwork
  • Environmental Permitting
  • River Diversion and Dewatering
  • Riverbank Improvements
  • Multi-modal Path Detours
  • Multi-modal Path Construction
  • Floodplain Impacts
CORPORATE HEADQUARTERS: PO Box 659, Springfield, Oregon 97477   /   phone: 541-746-2426   /   Fax: 541-746-7635
ALASKA DIVISION: 12078 N. Glenn Highway, Sutton, Alaska 99674 [PO Box 309, Sutton, Alaska 99674]   /   phone: 907-746-5307
RAIL DIVISION: PO Box 659, Springfield, Oregon 97477   /   phone: 541-746-2426   /   Fax: 541-746-7635
WASHINGTON DIVISION: 1850 93rd Avenue SW, Olympia, Washington   /   phone: 360-742-3326   /   Fax: 360-742-3579
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