This deck plate girder bridge once carried the Canadian National across 108th Avenue

Duluth, St. Louis County, Minnesota

Owner: Canadian National Railway

Status: Closed to all Traffic

Built 1913

by

American Bridge Company of New York

for

Spirit Lake Transfer Railway

Design:
5 span deck plate girder viaduct

Description:
Deck plate girder bridge over 108th Avenue

Significance:

This stone arch bridge is one of two similar structures behind the Lake Superior Zoo

Duluth, St. Louis County, Minnesota

Owner: City of Duluth

Status: In Use

Built 1912

by

Unknown

for

Duluth, Winnipeg & Pacific Railway

Design:
45' stone arch

Description:
Stone arch bridge over Kingsbury Creek

Significance:

This stone arch bridge is one of two similar structures behind the Lake Superior Zoo

Duluth, St. Louis County, Minnesota

Owner: City of Duluth

Status: Open to Trail Traffic

Built 1912

by

Unknown

for

Duluth, Winnipeg & Pacific Railway

Design:
30' stone arch

Description:
Stone arch bridge over Knowlton Creek Boulevard

Significance:

This tunnel is one of the very few railroad tunnels in Minnesota

Duluth, St. Louis County, Minnesota

Owner: City of Duluth

Status: Open to Trail Traffic

Built 1911

by

Unknown

for

Duluth, Winnipeg & Pacific Railway

Design:
520' bored tunnel

Description:
Bored tunnel through Ely's Peak

Significance:

This Baltimore through truss swing bridge crosses the St. Louis River south of US Highway 2

Superior, Douglas County, Wisconsin to Duluth, St. Louis County, Minnesota

Owner: BNSF Railway

Status: In Use

Built 1912

by

American Bridge Company of New York and Pittsburgh Construction Company of Pittsburgh, Pennsylvania

for

Northern Pacific Railway

Design:
425' Baltimore through truss swing span, 2-80' through plate girders and timber pile trestle

Description:
Baltimore through truss swing bridge over St. Louis River

Significance:

This through truss swing bridge once carried the Great Northern Railway across the St. Louis River below the present-day Blatnik Bridge

Superior, Douglas County, Wisconsin to Duluth, St. Louis County, Minnesota

Owner: Duluth Port Authority

Status: Partially Demolished, Remaining Spans Open to Pedestrian Traffic

Built 1897

by

Pennsylvania Steel Company of Steelton, Pennsylvania

for

Duluth-Superior Bridge Company

Design:
302' Pennsylvania through truss

Description:
Partially removed through truss bridge over St. Louis River

Significance:

This deck plate girder bridge was constructed to cross the Northern Pacific Railway

Duluth, St. Louis County, Minnesota

Owner: Canadian National Railway

Status: In Use

Built 1910

by

American Bridge Company of New York

for

Spirit Lake Transfer Railway

Design:
7 span deck plate girder viaduct

Description:
Deck plate girder viaduct over BNSF Railway

Significance:

This deck plate girder bridge crosses high above the Lester River on the east end of Duluth

Duluth, St. Louis County, Minnesota

Owner: St. Louis County Regional Railroad Authority

Status: In Use

Built 1896 and 1944

by

Lassig Bridge & Iron Works of Chicago and American Bridge Company of New York

for

Duluth & Iron Range Railroad

Design:
100', 30' and 21' deck plate girders

Description:
Deck plate girder bridge over Lester River

Significance:

This deck plate girder bridge crosses Tischer Creek near London Road

Duluth, St. Louis County, Minnesota

Owner: St. Louis County Regional Railroad Authority

Status: In Use

Built 1896

by

Lassig Bridge & Iron Works of Chicago

for

Duluth & Iron Range Railroad

Design:
Deck plate girder and steel stringer viaduct

Description:
Deck plate girder viaduct over Tischer Creek

Significance:

This through plate girder bridge once crossed 37th Avenue at Onetoa Street in Duluth

Duluth, St. Louis County, Minnesota

Owner: Canadian Pacific Railway

Status: Removed

Built 1907

by

Unknown

for

Minneapolis, St. Paul & Sault Ste. Marie Railroad

Design:
44' through plate girder and trestle

Description:
Lost through plate girder bridge over 37th Avenue

Significance: