Oliver Bridge

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The Oliver Bridge was built in 1910 by the Interstate Railway Transfer Company. It connects Gary - New Duluth, part of the City of Duluth, Minnesota with Oliver, Wisconsin across the the St. Louis River. The bridge is 1,900 feet (579 m) long and is principally of steel truss construction.

The upper deck carries the single track rail line while a lower deck carries the road connecting Wisconsin Highway 105 to Minnesota State Highway 39.^[1]

The upper deck was built so as to allow a streetcar line to be constructed from New Duluth to south Superior connecting the Duluth and Superior Streetcar systems. The line was never built and the systems were connected across the Twin Ports Harbor.

On the Oliver side a section of the bridge was built to swing allowing passage of large vessels despite the river only being navigable for a few miles upstream of the bridge. Only one vessel is ever thought to have used this facility, a ferry excursion boat operating between Duluth and Fond du Lac (Duluth). The ferry service ceased in the 1930s and the swing section has not operated since.

The road deck was originally a wooden deck. Modernization came in 2000 when both states' DOTs (WisDOT and Mn/DOT) cooperated with the DM&IR railroad to jointly fund a reconstruction of the roadway surface, which now features a stronger steel and reinforced concrete deck. A weight restriction, which was lowered to one ton as the road deck deteriorated, was then lifted.

The bridge is currently owned by the Canadian National Railway.

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