Atlantic Beach Bridge (Moveable)
Location:
Atlantic Beach, NY
Client:
Nassau County Bridge Authority
Contract Value:
$9 Million
Project Dates:
2011 to 2014
- Traffic Control Improvements and Landscaping
- Demolition and Reconstruction of Ramps, Bridges and Tunnel
PROJECT OVERVIEW
This project involves a comprehensive mechanical and electrical overhaul of the existing drawbridge over Reynolds Channel, while maintaining the passage of vehicular and marine traffic at all times for duration of contract. To perform this overhaul, temporary span drive motors with a temporary control system will be installed. The mechanical overhaul includes the removal and replacement of primary and secondary gearing, drive motors, motor brakes, machinery brakes, shafting, couplings, bearings, lubrication lines and fittings, spanlock motors, spanlock reducers, and spanlock guide/receiver bushings. The electrical overhaul includes the removal and replacement of bridge control system, power and lighting facilities, motor control center & control apparatus, navigation aids, conduit and wiring.
WHAT MADE THIS JOB COMPLEX
Rehabilitation work on in-service precision heavy movable structures such as drawbridges is inherently challenging work. All work had to be performed while maintaining traffic atop the structure and marine traffic below. Posillico worked very closely with the US Coast Guard and Bridge Operator in order to schedule and coordinate work with all parties involved.
HOW POSILLICO SOLVED IT
Posillico always maintained vehicular and marine traffic, and delivered the rehabilitated bridge in a condition that far exceeded the pre-construction conditions and expectations, well within prescribed tolerances and alignments. As well, Posillico worked in close cooperation with the engineer, subcontractors and vendors to bring expeditious and economical solutions to the various unanticipated conditions that arose during the course of the project.
