Interstate 5 drivers endured back-to-back bridge lifts Wednesday as crews checked out a faulty counterweight on the span connecting Vancouver and Portland.
After an inspection revealed that one of the weights on the Interstate 5 Bridge’s southbound side was partially loose from its track, workers moved quickly to assess the problem, said Oregon Department of Transportation spokeswoman Kimberly Dinwiddie. That required twice lifting the southbound span, backing up midday freeway traffic into Vancouver.
Bridge crews weren’t able to solve the issue right away. Additional lifts were planned for late Wednesday night into early Thursday while a temporary fix is put in place, Dinwiddie said.
“This was not an expected repair,” she said.
The I-5 Bridge uses huge concrete counterweights to raise the span during a bridge lift. On the southbound side, those weights measure about 700 tons each. They glide up and down the bridge towers guided in part by rollers along a fixed track.