Alexander McGaw of Philadelphia


Interstate Bridge

Image name

Interstate Bridge

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:

Regional