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code Related

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

St. Clair Tunnel, Under St. Clair River between Port Huron, MI, & Sarnia, ON, Canada, Port Huron, St. Clair County, MI

description

Summary

Significance: The St. Clair Tunnel was the first full-sized subaqueous tunnel built in North America. Joseph Hobson, the Chief Engineer, successfully combined three significant new technologies a tunnel shield driven by hydraulic rams; a cast iron tunnel lining; and the use of a compressed air environment. This tunnel eliminated a major bottleneck in the rail transportation system linking the American midwest with its eastern markets.

Survey number: HAER MI-67

National Register of Historic Places NRIS Number: 70000684

label_outline

Tags

railroad tunnels port huron clair tunnel clair tunnel clair river port huron sarnia canada clair county michigan historic american engineering record photo ultra high resolution high resolution library of congress national register of historic places
date_range

Date

1969 - 1980
person

Contributors

Historic American Engineering Record, creator
place

Location

Port Huron ,  42.97086, -82.42491
create

Source

Library of Congress
link

Link

http://www.loc.gov/
copyright

Copyright info

No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html

label_outline Explore Sarnia, Clair Tunnel, Railroad Tunnels

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Topics

railroad tunnels port huron clair tunnel clair tunnel clair river port huron sarnia canada clair county michigan historic american engineering record photo ultra high resolution high resolution library of congress national register of historic places