Oregon Department of Transportation tests trenchless solution
By Angus W. Stocking
Culverts and other storm water installations in Oregon face a special challenge, according to Oregon Department of Transportation (ODOT) hydraulic engineer Dan Gunther.
“For the last few years, if we planned any work on a culvert in fish-bearing streams, it would trigger the need for a fish passage, and that was typically too expensive for the proposed project budget—sometimes we’d find ourselves being required by the environmental regulations to construct a bridge to fix a culvert,” Gunther said.
Consequently, ODOT frequently has had to hold off culvert repairs if fish passage requirements were triggered. Now, many of these culverts are in critical condition.