Bids will be accepted Feb. 17 for coatings, concrete repair and related rehabilitation work on the Ambridge/Aliquippa Bridge over the Ohio River.
The 1,908-foot-long, 30-foot-wide, cantilever truss bridge, operated by the Pennsylvania Department of Transportation, was built in 1927 and last rehabilitated in 2000.
Pre-1930 Cantilever Truss Structure
Although commonly referred to as the Ambridge-Aliquippa Bridge for the two towns it connects, the plaque on the bridge lists its official name as the Ambridge-Woodlawn Bridge. Woodlawn was a former town that later became part of Aliquippa, according to www.historicbridges.org.
Ambridge is a company town named for the American Bridge Co., which built the bridge.
The bridge is one of the few remaining pre-1930 cantilever truss bridges in the United States. It has twice as many piers as a classic cantilever bridge.
The 10-span bridge carries a two-lane street, a sidewalk, and several utilities over the Ohio River, a highway, a Conrail track and a CSXT (formerly Three Rivers Railroad) track.
The project includes cleaning and coating approximately 374,500 square feet of new and existing structural steel surfaces. The steel will be abrasive blast-cleaned to SSPC-SP 10 (near white), tested for soluble salt with chloride remediation as needed, and recoated with a three-coat organic zinc-epoxy-urethane system.
Containment according to SSPC-Guide 6 and waste disposal according to Guide 7 are required.
The project includes power tool-cleaning to bare metal (SP 11) and priming 17,800 square feet of new and existing steel mating surfaces using an approved organic zinc-rich primer. The project also includes 9,135 square yards of penetrating sealant protective coating application for reinforced concrete superstructure surfaces.
The project must be completed by Oct. 12, 2012.
Reported by Paint BidTracker, a construction reporting service devoted to identifying contracting opportunities for the coatings community.