REF TEK to Provide Seismic Monitoring System for Large Bridge Project in Canada
PRESS RELEASE – April 5, 2012
REF TEK (REF TEK) has been selected by Bay Hill Contracting Ltd. to supply the Seismic Monitoring System for the Port Mann/Highway 1 Project in British Columbia.
According to the improvement project plan, this project will include a new 10-lane Port Mann Bridge, widening of the highway, upgrading interchanges and improving access and safety on Highway 1 and is scheduled to be completed by the end of 2013.
The project will include a system that is comprised of recorders, accelerometers, transducers, gauges, and software for real-time monitoring of ground motions and structural responses resulting from seismic activity. The north and south ends of the bridge will be instrumented with free-field downhole instruments and structural health monitoring instruments will be installed on the Port Mann Bridge. This system will provide near-real-time data to four separate entities.
This new Port Mann Bridge will be 2.02 km long, 65 m wide, and have a 42m clearance above the high water level, and will be the second longest cable-stayed bridge in the western hemisphere, with the main span between the towers stretching 470 meters long. However, the main bridge (between the ends of the cables) will have a length of 850 meters with two towers and 288 cables. The Port Mann Bridge will also be the widest long-span bridge of any type in the world at 65 meters wide.
The current Port Mann Bridge, which is the longest arch bridge in Canada and the 15th longest in the world, was originally opened in 1964 consisting of four lanes, and in 2001, an HOV lane was added eastbound in conjunction with a seismic upgrade. However, in order to accommodate growing traffic concerns, more lanes became necessary; thus, leading to the Port Mann/Highway 1 Project. After the completion of the new 10-lane bridge, the current Port Mann Bridge will be torn down.