St. Clair River Tunnel
St. Clair River Tunnel, 1900 and today
An old view from Port Huron’s archive beside today’s photo. Drag across to compare. The two aren’t taken from exactly the same spot.
1900TodaySt. Clair tunnel · Library of Congress. Matched to this listing by the words in its caption.
About St. Clair River Tunnel
St. Clair River Tunnel, at St. Clair River between Port Huron, Michigan and Sarnia, Ontario, was added to the National Register of Historic Places on Oct 15, 1970: the first place in Port Huron to be listed. It was named a National Historic Landmark on Apr 19, 1993, one of 37 in Michigan. Only 27 of Michigan’s 1,942 listings are older. The Register lists it for its transportation, engineering and commerce, at the national level. The listing covers 16 acres.
What it isRailway tunnel in Michigan and Sarnia, Ontario. From Wikidata (CC0). Read about it on Wikipedia ↗
PDFRead the original nominationThe form that put it on the Register, with its history, photos and a map · 60 MB · National Archives↗1891 to today
- 1891Built
- 1900
St. Clair tunnel - 1970Added to the National Register of Historic Places
- 1993Named a National Historic Landmark
- 2026On the Register for 56 years
An old view of St. Clair River Tunnel
Postcards and photographs from Port Huron’s archive whose captions name it, from 1900. Tap one to see it full screen.
1900Finding St. Clair River Tunnel
St. Clair River between Port Huron, Michigan and Sarnia, Ontario, Port Huron
No other Register listing is within a short walk. The nearest are under Around it.
7 more Register listings within 2 miles
★ National Historic Landmark · D district · B building · S site. Each opens its own page.
Memories of St. Clair River Tunnel
The record says what it is. Neighbors know what it means.
Your answer becomes a post in Town Square.
Questions about St. Clair River Tunnel
Is St. Clair River Tunnel on the National Register of Historic Places?
Yes. It was added on Oct 15, 1970 (Register number 70000684).
Is St. Clair River Tunnel a National Historic Landmark?
Yes, since Apr 19, 1993. Michigan has 37 National Historic Landmarks, 2 of them in Port Huron.
Can you visit St. Clair River Tunnel?
Our record doesn’t say whether it is open to visitors. Many listed buildings are private, so it may only be seen from the street.
Where can I read the history of St. Clair River Tunnel?
In its National Register nomination, the form that put it on the Register: a 60 MB PDF at the National Archives, linked on this page.
Sources: National Park Service, National Register of Historic Places (05/22/2026) · National Archives catalog record 25340515 · Wikidata · old views from Port Huron’s archive. Map tiles © OpenStreetMap contributors.