United States
Historic Bridges of the Midwest
Database which also contains news and images. Also covers facilities outside of the core region.
Hobbies and Diversions
Includes Bridges Of Minneapolis/St. Paul, Bridges Of The Upper Mississippi River, and Bridges Of The Lower Mississippi River, which consist of photographs and data.
National Bridge Inventory Database
Form on a private website which retrieves information about individual structures, culled from the Federal Highway Administration National Bridge Inventory.
National Bridge Inventory Study Foundation
Gives details on certain structures and includes state summaries.
Roads and Bridges
Various views from Boston, Massachusetts; Louisville, Kentucky; Minnesota; and Wisconsin.
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