Owner: Florida Department of Transportation – Tallahassee, FL
Licensor: Anchor Wall Systems, Inc.
Manufacturer: Oldcastle Coastal
Contractor: Associated Construction Products, Inc.
With a bike path and a pedestrian trail directly below the bridge, there was little room to excavate
Once school was out and summer recess underway, the road was closed so construction could begin. The old bridge was removed and excavation for the new support walls began. A proprietary concrete block retaining wall system was specified for its near vertical batter, which helped alleviate the space restriction issue and also allowed for a much wider passageway for the trail below the bridge.
Speeding construction time to completion was a high priority for this project. The concrete block face walls are dry stacked, and as a result, the abutment walls were rapidly erected and ready to support the superstructure. With dry-stacking there was no cure time required, meaning that the abutment wall construction was not interrupted at various courses and so installation progressed ahead of schedule. The abutment walls were 18 feet high (5.5 m), with acute angles that necessitated special cuts in the block, along with rebar reinforcements at the corners and on the sides. To prevent the corners from separating, block cores were filled with grout, from top to bottom. The Orange Avenue Bridge opened to traffic 23 days ahead of schedule.
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