Learn the proper culvert design, size, ... The culvert’s corrugation provides a greater strength-to-weight ratio than a smooth pipe. This helps support the weight of vehicles, ...

The road commission is awaiting on their permits for the new culvert design from the Michigan Department of Environment, Great Lakes, and Energy (EGLE). The department now has up to 90 days to ...

A six-foot-diameter corrugated steel pipe culvert at Dry Creek Road north of the city of Napa is targeted for a $1.6 million replacement project — and that's just part of a bigger story to help ...