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The Bridges of Portland, Oregon - http://www.bizave.com/portland/bridges/
Photos and descriptions of Portland, Oregon's wide variety of river bridges. |
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Whittier Tunnel - http://www.dot.state.ak.us/creg/whittiertunnel/index.htm
A one lane shared railroad/road tunnel under construction. |
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Knik Arm Bridge and Toll Authority - http://www.knikarmbridge.com/
Created to construct a bridge connecting Anchorage and the Mat-Su Borough. Page includes history, diagrams, and maps. |
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Oregon's Covered Bridges - http://home.comcast.net/~draft10/bridges/bridges.html
History and county by county guide, with photographs and descriptions. Also an explanation of truss types, with diagrams. |
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3rd Street Tunnel of Los Angeles - http://www.ulwaf.com/LA-1900s/PicturePages/AngelsFlight3rdSt.html
Postcards and photos from its construction in the 1890s to the present day. |