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Project Overview:
HBG Flatiron
received national recognition for its construction of a series
of projects in the Glenwood Canyon corridor of I-70 between
August 1987 and January 1994. All of these projects for the
Colorado Department of Transportation were built under stringent
environmental and traffic disruption restrictions, harsh winter
working conditions and restricted workspaces. HBG Flatiron
crews excelled at constructing these extremely technical projects
and successfully completed them on or ahead of schedule.
Project Features:
The first precast, segmental structures built were at Grizzly
Creek West - five segmental bridges containing a total of
15 spans varying in length from 105 to 132 feet, for a total
linear length of 2,116 feet
At Hanging Lake Viaduct three precast concrete segmental
bridges were built for a total of 8,430 linear feet; each
span of 200 feet was placed as balanced cantilevers using
an overhead-launching gantry.
Maximum span lengths of 300 feet were placed at the twin
structures over the Colorado River, utilizing both external
and internal post-tensioning
1.9 miles of interstate highway, an 8-span cast-in-place,
post-tensioned box girder bridge, a pedestrian bridge, precast
retaining walls, and box culverts at French Creek Eastbound
Two precast concrete segmental bridges, a 3,139-foot, 16-span
structure and a 1,327-foot, 7-span structure at the French
Creek Viaduct project
584 casted bridge segments in a casting yard near the project
Mechanically stabilized earth walls, bridge railings, landscaping,
rock bolting, and caisson drilling
Awards:
American Concrete Institute's Project of the Year
Association of General Contractors Build America Award
Project Related Links:
Colorado Department of Transportation
http://www.dot.state.co.us
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