Tunnel

34 photos

Swiss guarding tunnel

Approach to the Detroit River Tunnel, Detroit, Mich.

Ste. Claire i.e. St. Clair tunnel, Port Huron, Mich.

East portal, Hoosac Tunnel, North Adams i.e. Florida, Mass.

West portal, Hoosac Tunnel, North Adams, Mass.

Sinking last tubular section, Detroit River tunnel

Sinking last tubular section, Detroit River tunnel, W.S. Kinnear, chief engineer, Butler Bros. Construction Co., contractors

Entrance to St. Clair tunnel, Port Huron, Mich.

Detroit River tunnel, Detroit, Mich.

St. Clair tunnel, Port Huron, Mich.

Jenson Tunnel

Union Canal Tunnel

Chattanooga, Harrison, Georgetown & Charleston Railroad Tunnel

Cumberland Mountain Tunnel

Stumphouse Tunnel Complex

Westmoreland Tunnel

St. Clair River Tunnel

Ptarmigan Tunnel

East portal, Hoosac Tunnel, Florida, Mass.

West portal, Hoosac Tunnel, North Adams, Mass.

Detroit River tunnel, Detroit, Mich.

Tunnel 4 from 5, Temasopa sic Canon

Tunnel 5, Temasopa sic Canon, Mexico

Tunnel walk, Highland Park, Pittsburgh, Pa.