- Bridge Repair
Grants Pass, OR (1998)
Page 1 of 2
This bridge pier footing was installed in 1922. According
to the Oregon Department of Transportation, it is long
overdue for repair.
A 3' x by 100' AquaDam® being installed to divert stream flow
around the pier. This picture was taken about halfway through the
installation. Four workers held the AquaDam® back to maintain head
pressure while another worker removed rocks and other obstructions.
According to Best Management Practices, stream diversions should be done
during low flows. Notice water quality on the right side of the AquaDam®.
This is what it's all about: keeping the water flow clean during all phases
of the cofferdaming activities, including the installation and removal of the
AquaDam®. Workers must hold the AquaDam® back, not only to maintain pressure at the end
where the workers are standing, but throughout the entire length of the unrolling
during the installation process.