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 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 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 skewed through plate girder bridge carries the Willard Munger State Trail across 93rd Avenue

Duluth, St. Louis County, Minnesota

Owner: Minnesota Department of Natural Resources

Status: Open to Trail Traffic

Built 1916

by

Unknown

for

Northern Pacific Railway

Design:
63' through plate girder and 2-13' steel stringer

Description:
Through plate girder bridge over 93rd 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: 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 through plate girder bridge carries the Alborn-Pengilly Trail across the BNSF Railway at Alborn

Alborn, St. Louis County, Minnesota

Owner: Minnesota Department of Natural Resources

Status: Open to Trail Traffic

Built 1919

by

American Bridge Company of New York

for

Duluth, Missabe & Northern Railroad

Design:
3-36' through plate girder

Description:
Through plate girder bridge over Alborn Junction Road and 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 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:

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 carries the Alborn-Pengilly Trail across the St. Louis River

Elmer, St. Louis County, Minnesota

Owner: Minnesota Department of Natural Resources

Status: Open to Trail Traffic

Built 1905

by

Unknown

for

Duluth, Missabe & Northern Railroad

Design:
2-105', 1-80' deck plate girder

Description:
Deck plate girder bridge over St. Louis River

Significance: