Below you will find basic information about bridges as well as web sites on the following bridges:  Golden Gate , Sunshine Skyway, Chesapeake Bay , Sydney Harbor , Tower Bridge ,  Tacoma Narrows , Tappan Zee ,  Brooklyn Bridge and the Millennium Bridge .

How Bridges Work
http://science.howstuffworks.com/bridge.htm
This website includes an introduction on how bridges work and also includes information about different types of bridges including the beam bridge, the arch bridge and the suspension bridges.

Bridge Basics
http://www.pbs.org/wgbh/buildingbig/bridge/basics.html
This website includes basic information on the beam bridge, truss bridge, arch bridge and suspension bridge.

Building Big: All about Bridges
http://www.pbs.org/wgbh/buildingbig/bridge/index.html

Understanding Bridges
Understanding Bridges (English version)
Understanding Bridges (Spanish version)
http://www.unitedstreaming.com/search/assetDetail.cfm?guidAssetID=974C3630-156E-4809-9A2E-B81171AEB0B3 
Learn why some bridges are light and elegant, while others are massive slabs; why some are arched and some suspended; why some are concrete and others steel. See up close just how engineers pull off erecting these enormous structures and keep them standing.  United Streaming video password required.   

Structures:Suspension Bridges
 http://www.unitedstreaming.com/search/assetDetail.cfm?guidAssetID=F5B4C5F4-039D-4350-8B8F-A4A1D9302086
 The first segment of this video focuses on suspension bridges and specifically the Tacoma-Narrows Bridge.  United Streaming video password required.

http://goldengatebridge.org/research/
Included in the sub-sections on this portion of the web site are a wide variety of information and a wealth of statistics about the Bridge.

http://www.pbs.org/wgbh/amex/goldengate/

http://www.pbs.org/wgbh/amex/goldengate/sfeature/sf_forces.html

http://www.pbs.org/wgbh/buildingbig/wonder/structure/golden_gate.html  

http://en.wikipedia.org/wiki/Chesapeake_Bay_Bridge

http://www.answers.com/topic/chesapeake-bay-bridge

http://en.allexperts.com/e/c/ch/chesapeake_bay_bridge.htm

http://www.dcroads.net/crossings/bay-bridge/

http://www.mdkidspage.org/BayBridge.htm

 Tower Bridge, London

Tower Bridge Exhibition:  History and Interesting Facts
http://www.towerbridge.org.uk/TowerBridge/English/BridgeHistory

Building Big: Databank:  Tower Bridge
http://www.pbs.org/wgbh/buildingbig/wonder/structure/tower.html

Tower Bridge History, pictures, links
http://www.plus44.com/london44/tour/towerbridge.html

Tappan Zee Bridge at AllExperts
http://en.allexperts.com/e/t/ta/tappan_zee_bridge.htm

Tappan Zee Bridge Inspection Shows Years of Deterioration
http://www.thejournalnews.com/apps/pbcs.dll/article?AID=/20051127/NEWS02/511270359/1029/news13
Original article from the Journal News, November 27, 2005

Tappan Zee Bridge – Historic Overview
http://www.nycroads.com/crossings/tappan-zee/

http://en.wikipedia.org/wiki/Sunshine_Skyway_Bridge

Building Big Database: Sunshine Skyway Bridge
http://www.pbs.org/wgbh/buildingbig/wonder/structure/sunshine_skyway.html

Sunshine Skyway Bridge – History 1954-1999
http://www.geocities.com/pagesbydave/SunSkyDemoHis.html

Architecture of the Sydney Harbour Bridge
http://www.glasssteelandstone.com/OZ/SydneyHarbourBridge.html

Sydney Harbour Bridge
http://www.sydneyharbourbridge.info/

Tacoma Narrows Bridge: Extreme History
http://www.wsdot.wa.gov/TNBhistory/


Tacoma Narrows Bridge – A Tale of Two Gerties
How and Why We Bridged the Narrows
http://www.gigharbormuseum.org/nbonlinexhibit.html

Brooklyn Bridge, New York

Brooklyn Bridge - Timeline
http://www.pbs.org/kenburns/brooklynbridge/timeline/

Building Big: Databank:  Brooklyn Bridge
http://www.pbs.org/wgbh/buildingbig/wonder/structure/brooklyn.html

The Brooklyn Bridge Story
http://www.catskillarchive.com/rrextra/bbstory.Html

Strike Coverage: Brooklyn Bridge Not Built for Crowds
http://www.villagevoice.com/news/0551,news,71185,2.html

Millennium Bridge

Engineering at the Cutting Edge: The Millennium Bridge video segment   (United Streaming password needed)
http://www.unitedstreaming.com/search/assetDetail.cfm?guidAssetID=54AA0376-329E-410F-AADD-7DDD2CC46E72