Historic Bridges: Thunder Bay District, Ontario

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S - Dismantled and/or in storage. L - Severe loss of historic integrity due to alteration.

Total Bridges Found: 8

Black Bay Bridge
HSR

Arundel Street Over Current River in Thunder Bay: Thunder Bay District, Ontario, Canada

Concrete Open Spandrel Deck Arch, Fixed and Approach Spans: Concrete T-Beam, Fixed

Length: 208 ft. Main Span: 130 ft. Main Spans: 1

Built 1912 By: Seaman and Penniman and Joachim Antonisen and L. M. Jones

This is a very early example of an open spandrel arch bridge in Canada.

Harstone Bridge
HSR

Harstone Drive Over Kaministiquia River in Rural: Thunder Bay District, Ontario, Canada

Metal 5 Panel Rivet-Connected Warren Pony Truss, Fixed and Approach Spans: Metal Deck Girder, Fixed

Length: 368 ft. Main Span: 107 ft. Main Spans: 2

Built 1922 By: Unknown

This massive but narrow pony truss bridge clearly displays its heritage as a former railway bridge.

Jackknife Bascule Bridge
HSR

Railroad (Canadian Pacific) and Former Highway Over Kaministiquia River in Thunder Bay: Thunder Bay District, Ontario, Canada

Metal Rivet-Connected Warren Through Truss, Movable: Single Leaf Bascule (Heel Trunnion) and Approach Spans: Metal ,

Length: 374 ft. Main Span: 186 ft. Roadway: 29 ft. Main Spans: 1

Built 1914 By: Alexander Charles Stewart and Strauss Bascule Bridge Company (Strauss Engineering Company) of Chicago, Illinois

One of the most unique surviving Strauss bascule bridges in North America, this bridge originally had a highway deck over its railway deck.

James Street Bridge
Kaministiquia River Swing Bridge
HSR

James Street and Railroad (Canadian National) Over Kaministiquia River in Thunder Bay: Thunder Bay District, Ontario, Canada

Metal 9 Panel Rivet-Connected Warren Through Truss, Movable: Swing (Rim Bearing Center Pier) and Approach Spans: Metal 5 Panel Rivet-Connected Pratt Through Truss, Fixed

Length: 530 ft. Main Span: 250 ft. Main Spans: 1

Built 1909 By: Unknown

This is a rare example of a railway swing bridge that also includes cantilvered highway decks on each side.

Little Pic River Bridge
HSR

KH-17 (Trans-Canada Highway) Over Little Pic River in Rural: Thunder Bay District, Ontario, Canada

Metal Cantilever Rivet-Connected Warren Deck Truss, Fixed and Approach Spans: Metal Rivet-Connected Warren Deck Truss, Fixed

Length: 740 ft. Main Spans: 3

Built 1958 By: Unknown

This is an uncommon example of a cantilever deck truss in Ontario.

McKellar Lift Bridge
HSR

Island Drive and Railroad (Canadian Pacific) Over McKellar River in Thunder Bay: Thunder Bay District, Ontario, Canada

Metal 6 Panel Rivet-Connected Warren Through Truss, Movable: Single Leaf Bascule (Rolling Lift) and Approach Spans: Wood Stringer (Multi-Beam), Fixed

Length: 215 ft. Main Span: 125 ft. Main Spans: 1

Built 1911 By: Unknown and Scherzer Rolling Lift Bridge Company of Chicago, Illinois

This is a very rare combined highway and railway Scherzer rolling lift bascule bridge with three truss lines.

Nipigon River Railway Bridge
HSR

Railroad (Canadian Pacific) Over Nipigon River, Railroad (Abandoned Canadian National), and Unnamed Road in Rural: Thunder Bay District, Ontario, Canada

Metal 7 Panel Rivet-Connected Pratt Deck Truss, Fixed and Approach Spans: Metal Rivet-Connected Warren Deck Truss, Fixed

Length: 770 ft. Main Span: 150 ft. Main Spans: 1

Built 1905 By: Unknown

This impressive deck truss is noted for its rare fishbelly deck truss main span.

White Lake Narrows Bridge
HSR

KH-17 (Trans-Canada Highway) Over White Lake Narrows in Rural: Thunder Bay District, Ontario, Canada

Metal 11 Panel Tied Solid Ribbed Through Arch, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed

Length: 460 ft. Main Span: 280 ft. Main Spans: 1

Built 1959 By: Canadian Bridge Company of Walkerville, Ontario

This is an extremely rare example of a steel through arch bridge in Ontario.

Historic Bridges: Thunder Bay District, Ontario

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