The City of Edmonton and contractors are working to repair or remove several steel girders that buckled during installation for the 102 Avenue bridge replacement project.
At approximately 2:15 a.m. on March 16, four of the girders buckled as one of the girders was being installed. Construction teams immediately secured the construction site for worker and public safety and initiated an investigation.
The general contractor is Graham Construction & Engineering Inc., and AECOM was consulted for design.
"Under the city's oversight, several engineering teams are investigating the situation to determine exactly what went wrong here," said Barry Belcourt, branch manager of the roads design & construction branch with the city. "At this point in time we are not able to identify a single factor that caused the girders to fail.
"Regardless of the cause, public safety is paramount and we can't have anyone traveling underneath the bridge until it's safe to do so. Therefore Groat Road must unfortunately remain closed until further notice."
The city will continue to provide public updates as the investigation proceeds, and will notify Edmonton residents as soon as Groat Road can be safely opened. Suggested detour routes during the closure include Victoria Park Road, 149 Street to Whitemud Drive, and 109 Street to the High Level Bridge. ETS Route 128 will detour to Victoria Park Road/116 Street/107 Avenue, with extra buses on Saturday, March 14 to make up for the delay.
The 102 Avenue over Groat Road Bridge serves as a major east/west corridor into and out of Edmonton's downtown. Constructed in 1910, the bridge has reached the end of its lifespan and will be demolished and replaced with a new bridge.
The replacement bridge has a clear span of approximately 100 m and will maintain the existing four-lane configuration. It is designed to accommodate two 2.1 m wide bike lanes on the road shoulder and 2.2 m wide sidewalks along the north and south sides.
The design of the new bridge considers includes stabilization of both the east and west slopes using soil nails, concrete deck with asphalt surfacing and upgrades to the drainage infrastructure.