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Home » Bridge Builders Step Lightly Over Sensitive Environmental Impacts
Southeast Construction Projects2014SoutheastBest Projects

Bridge Builders Step Lightly Over Sensitive Environmental Impacts

South Florida Mormon Temple Showcases Design Aesthetics
Environmental concerns prohibited the use of barges, which would have had to traverse a protected mangrove island.

Photo courtesy of Martin County, Fla.
South Florida Mormon Temple Showcases Design Aesthetics
The new concrete bridge structure features dedicated bike lanes and barrier-separated, 6-ft-wide sidewalks.

Photo by Gary Borland
South Florida Mormon Temple Showcases Design Aesthetics
The Veterans Memorial Bridge in Martin County, Fla., included construction of a 3,100-ft-long, high-level fixed-span concrete bridge structure.

Photo by G. Benjamin Lehr
South Florida Mormon Temple Showcases Design Aesthetics
The Veterans Memorial Bridge project earned an Award of Merit in the highways and bridges category.

Photo by Greg Gardner
South Florida Mormon Temple Showcases Design Aesthetics
South Florida Mormon Temple Showcases Design Aesthetics
South Florida Mormon Temple Showcases Design Aesthetics
South Florida Mormon Temple Showcases Design Aesthetics
November 3, 2014
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The design-build Veterans Memorial Bridge in Martin County, Fla., included construction of two miles of new alignment for County Road 714, reconstruction of intersections and a 3,100-ft-long, high-level fixed-span concrete bridge structure featuring dedicated bike lanes and barrier-separated, 6-ft-wide sidewalks.

Facing environmental concerns that prohibited the use of barges, which would have had to traverse a protected mangrove island, the team of Archer Western and RS&H used a temporary trestle and an overhead beam erector to construct most of the bridge. While the procurement, fabrication, installation and removal of the trestle added to the already tight schedule, the use of the overhead beam erector minimized the amount of trestle needed, compressed the superstructure erection schedule and minimized wetland impacts. The main channel section, a four-span continuous post-tensioned unit with spans of 250 ft, is comprised of spliced 78-in. Florida I-Beams, with 90-ton haunched segments resting on the pier caps and 134-ft drop-in segments spanning between them to cross the mangrove island and navigation channel. The segments, which were delivered by trestle, were rolled over the island on a temporary launching truss, then hoisted by the overhead lifting truss and shifted into position.

Award of Merit, Highways and Bridges — Veterans Memorial Bridge, Stuart, Fla.

Key Players

Contractor Archer Western Contractors, Tampa

Owner Florida Dept. of Transportation, Fort Lauderdale, Fla.

Lead Designer RS&H, Jacksonville, Fla.

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A joint venture of Skanska, Corman Kokosing Construction Co. and McLean Contracting Co. is moving toward an early 2020 construction start for a $463-million replacement for a 79-year-old bridge across the Potomac River, south of Washington, D.C.

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