Stockbridge-Munsee Community wanted to install five culverts for wetland restoration purposes along Miller Creek in Shawano County, Wisconsin. However, Stockbridge had limited experience with design alternatives for stream crossings. raSmith brought a good blend of engineering and ecological skills to the table.
Challenges existed as there was limited access to the site and the culverts were located under an old railroad embankment. Aluminum box culverts were assembled on site. The culverts were lightweight and easily maneuvered and placed. The project objectives to restore flow in this historic stream channel and provide for terrestrial and aquatic organism passage were met with the design of four new and one replacement crossings of the rail embankment through wetlands.
Sizes of the replacement culverts were as follows:
- Two 21-foot-wide by 5-foot-high aluminum box culverts
- One 21-foot-wide by 6-foot-high aluminum box culvert
- Two 48-inch-diameter aluminized corrugated steel culverts
Permits were successfully obtained from the Wisconsin Department of Natural Resources and the project met and exceeded the client’s expectations.