Bridge and Structure Construction
We've been a prime contractor on new and reconstructed bridges for decades, from an interchange structure on SR-7 to a steel truss footbridge set by crane.
Bridge work starts in the ground: excavation and embankment, drilled shafts and footings, then girders, the deck pour and the approaches. We run our own pits and a ready-mix plant, so we can supply the rock and the concrete ourselves.
Projects
Also on our list: Chapel Street Bridge.
How it gets built
How a Bridge Gets Built
A highway bridge over a road goes together from the ground up: what holds it, what spans, then what you drive on.
Drive the Piles
Steel piles are driven deep under each end and the middle, down to ground that can carry the load.
Footings, Abutments and Pier
Concrete footings cap the piles. Abutments go up at each end and a pier in the middle, with seats on top for the beams.
Set the Girders
A crane lifts precast concrete girders onto bearings, one at a time, usually with the road below closed for the night.
Form and Pour the Deck
Forms and rebar go across the girders, then the deck is poured, finished and left to cure.
Barriers
Concrete barriers go along both edges of the deck to keep traffic on the bridge.
Approach Slabs and Paving
Approach slabs join the bridge to the road at each end so there's no bump. Then we pave, stripe and open it up.
3650 South & SR-7 Interchange
New-capacity highway construction from Camino Real to SR-7, with an interchange, to improve the way traffic moves through Washington County.
Roadway
Excavation and embankment for the bridges, granular borrow and untreated base course, paving in HMA ½″ and SMA ½″, plus concrete sidewalk, curb and gutter, fencing and guardrail.
Drainage
New drainage pipe, manholes, catch basins and drainage structures, and removal of the old ones.
Structure F-951
A new bridge on drilled shafts, with coated reinforcing steel, structural concrete, prestressed concrete members and a thin bonded polymer overlay.
Landscaping
Hydroseeding for erosion control, broadcast seeding and rock mulch. Topsoil stripped, stockpiled and spread again.
Signing and Lighting
New signs and posts, a new highway lighting system and an advanced traffic management system on fiber optic.
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