This bored and lined tunnel carries the Elroy-Sparta State Trail (former Chicago & North Western Railway) under a hill and Lignite Road between Wilton and Norwalk

Wilton, Monroe County, Wisconsin

Owner: Wisconsin Department of Natural Resources

Status: Open to Pedestrian Traffic

Built 1873

by

L. Carmichael & Company of Tama, Iowa

for

Chicago & North Western Railway

Design:
1,544' bored tunnel with stone and brick lining

Description:
Bored and lined tunnel under unnamed hill and Lignite Road

Significance: