The Port Authority of New York & New Jersey - Manages bridges, tunnels, airports and transit in New York City and Northern New Jersey. Chesapeake Bay Bridge Tunnel - Official site of the facility connecting Southeastern Virginia to the Virginia portion of the Delmarva Peninsula. Site includes statistics, toll information, and restaurant/gift shop information. The Bridges of Portland, Oregon - Photos and descriptions of Portland, Oregon's wide variety of river bridges. The Ohio River Bridges - Project to build and upgrade cross-river facilities in the Louisville, Kentucky and Southern Indiana areas. News, maps, and contact information. Historic Bridge Foundation - A national advocacy organization for the preservation of historic bridges in the United States. Historic Bridges of the U.S. - Database which also contains news and images. US 82 Greenville Bridge - Information about the new cable-stayed span over the Mississippi River from Arkansas to Mississippi, including project updates, historical information about the current and new bridges, and a live webcam. Bridges and Tunnels - Focuses on the East Central region. Includes forum. Brent Spence Bridge - Project to rehabilitate or replace this structure which carries Interstates 71 and 75 over the Ohio River at Cincinnati, Ohio and Covington, Kentucky. Maps of planned alternatives, and feedback page. New US Grant Bridge over the Ohio River - Weblog on this facility connecting Kentucky to Portsmouth, Ohio. Ohio Historic Bridge Association - Provides a list of the locations of the remaining vehicular iron and steel truss structures erected in the state before 1920. Oklahoma Bridges - Provides a photographic overview of historic steel and iron truss, wood and concrete facilities built circa 1890-1965. Includes photo galleries, some highway history and traces the history and development of civil and bridge engineering from the time period. Bridges and Tunnels of Allegheny County and Pittsburgh, PA - A listing of the structures. Includes histories and photographs. John Weeks III - Hobbies and Diversions - Includes Bridges Of Minneapolis/ St. Paul, Bridges Of The Upper Mississippi River, Bridges Of The Lower Mississippi River, and the North American Cable Stay Bridge Registry, which consist of photographs and data. Dingmans Bridge - Official website of one of the few privately owned bridges left in America. History, photos, tolls, and directions. New Jersey. National Bridge Inventory Database - Retrieves information about individual structures, culled from the Federal Highway Administration National Bridge Inventory. The William H. Natcher Bridge - A series of pictures of the new William H. Natcher Bridge carrying U.S. 231 from Kentucky to Indiana across the Ohio River. Covington-Cincinnati Suspension Bridge Committee - Volunteer group overseeing the Roebling Bridge over the Ohio River, connecting Kentucky and Ohio. News, photographs, and history. National Society for the Preservation of Covered Bridges - Founded in 1950, the Society has been instrumental in saving many historic spans from demolition. Publishes, World Guide to Covered Bridges.