Alexander McGaw of Philadelphia
Interstate Bridge
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: