In 2010, two short span recycled composite bridges used Bridge Sleepers made using the Rutgers and Polywood Technologies to deliver a load rating of 130 tonnes. The Bridge Sleepers were installed as part of the bridge design in Fort Eustis, to carry the load of a 120 tonne locomotive train.
Composite Sleepers made using the Rutgers and Polywood Technologies were first introduced in 1998 to the Chicago Transit Authority, and have been used on their over ground and bridge sections. Trains have a maximum speed of 65mph, with a typical 8.7 tonne axel load.
New Zealand’s Kiwi Rail has installed sleepers made using the Rutgers and Polywood Technologies on critical application areas such as turnout switch-sets and transoms (sleepers installed on open deck bridges). The sleepers were chosen because of its durability in challenging track conditions, including fluctuating weather conditions.
Dallas Area Rapid Transit (DART) has installed sleepers made using the Rutgers and Polywood Technologies for use in the Trinity Railway Express (TRE) that connects Dallas and Fort Worth. TRE has installed main line as well as specialty sleepers for use in crossings, turnouts and bridges. This use of composite eliminated the need to cut down more than 2,500 trees and diverted 453 tonnes of plastic from landfill.
A major international freight line has installed sleepers made using the Rutgers and Polywood Technologies on its bridges due to the durability, lightness and life-cycle value. The technology has been used for replacement of wood timbers on bridges, turnout switch-sets and transoms, including sleepers installed on open bridges.