Alexander McGaw of Philadelphia
Interstate Bridge
Interstate Bridge
This through truss swing bridge has been mostly removed and crosses the St. Louis River below the Blatnik Bridge
Superior, Douglas County, Wisconsin to Duluth, St. Louis County, Minnesota
Owner: Duluth Port Authority
Status: Partially Demolished, Remaining Spans Open to Trail 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: