CONCRETE — Crews will soon move from the Lorenzan Creek fish passage project along Highway 20 in Concrete to the Fish Creek project site in Grassmere.
Two-foot diameter culverts that can create challenges for fish passage under the highway are being replaced with larger structures at both sites.
State Department of Transportation engineer Melissa Ambler said a new box culvert was put into place at Lorenzan Creek on Aug. 31. According to a news release, finishing touches are being wrapped up this week while a traffic detour is in place.
Use of the detour — where a signal is allowing alternating traffic along a newly paved section of the Cascade Trail — is expected to end over the weekend.
The new Lorenzan Creek structure is 16 feet wide, while the one to be installed at Fish Creek will be 19 feet wide.