The U.S. Army Corps of Engineers is considering a request to fill more than 105 acres of wetlands and to clear about 117 acres of vegetation for the construction of a high-voltage power line between Holmen and the Madison area.

Most of the proposed wetland impacts would be temporary as contractors install matting to accommodate heavy machinery during the construction of the Badger-Coulee transmission line, according to a permit application published Friday.

At least 273 poles erected to carry the 181-mile line will permanently fill about one acre of wetlands, according to the application. The project will require clearing vegetation from about 117 acres of forested wetland, although more than 91 percent of the route approved by Wisconsin utility regulators follows existing interstate highway and transmission line right-of-way.

The proposed route includes two crossings of the Black River and one of the Wisconsin River, in addition to 105 other waterways. It could affect a handful of threatened or endangered species, including the Northern long-eared bat, the Eastern Massasauga rattlesnake and the Karner blue butterfly, as well as the Higgins eye and sheepnose mussels.