The Washington Township Boulevard Bridge was constructed as a key link in the construction of a bypass around Waynesboro to relieve traffic congestion. The structure would also act as a stream crossing and a clear span was needed to effectively clear the stream with minimal impact on the surrounding environment and provide sufficient hydraulic capacity.
A triple cell - each cell 48 x 10 ft, for a total of 152 ft span - CON/SPAN® Bridge System was chosen for the project because of its innovative, economical design, clear spans and aesthetic aspects. The first triple span CON/SPAN to be installed in the State of Pennsylvania, the Washington Township Boulevard structure provided the stream crossing with a high-quality precast concrete solution that combined the strength of the CON/SPAN arch with an aesthetically pleasing architectural surface treatment. The architectural facade was requested in order to enhance the appearance of the structure.
This structure was a triple cell, high clearance span with deep pile foundations and proved successful for the site conditions and also provided excellent hydraulic capacity. The design also utilized fast, set-in-place construction, resulting in an overall speedy installation and long life cycle.
“The new bridge carries two lanes of traffic and was designed to allow for widening for a future expansion of the boulevard to a four-lane divided roadway,” said Douglas Stumpp, Project Manager with Traffic Planning and Design, Inc. “Aesthetic treatments were an integral part of the design to achieve an appealing structure that fit in with the surroundings.”
The project recently won the 2009-2010 Outstanding New Short Span Bridge Award from the Susquehanna Chapter of the Association of Bridge Construction and Design (ABCD).
In addition, Tensar® structural geogrid was utilized to enhance the overall structural capacity of the roadway pavement above the bridge.