3rd Street Tunnel of Los Angeles: Postcards and photos from its construction in the 1890s to the present day.
Foresthill Bridge: Information about the structure in Northern California used in movies and stunts. Includes photograph album and media articles.
Knik Arm Bridge and Toll Authority: Created to construct a bridge connecting Anchorage and the Mat-Su Borough. Page includes history, diagrams, and maps.
NewBayBridge.org: Page by the California Alliance for Jobs illustrating and describing construction of the new east span of the San Francisco-Oakland Bay Bridge. Includes builder information and history of the existing bridge.
Oregon's Covered Bridges: History and county by county guide, with photographs and descriptions. Also an explanation of truss types, with diagrams.
The Bridges of Portland, Oregon: Photos and descriptions of Portland, Oregon's wide variety of river bridges.
Whittier Tunnel: A one lane shared railroad/road tunnel under construction.