Bridges
From Bwtm
Contents |
links
ASCE Bridge Calendar http://www.asce.org/Content.aspx?id=23622327581
http://www.darkroastedblend.com/2009/05/worlds-most-interesting-bridges-part-3.html
Photos
General
http://todayspictures.slate.com/20110525/
Bascule bridge
1200 Ton R.R. Bridge over Cape Cod Canal, Buzzard's Bay http://loc.gov/pictures/resource/ggbain.16674/
Swing bridge
Seven Mile Bridge, Linking Florida Keys, Knight Key, Monroe, FL http://lcweb2.loc.gov/cgi-bin/ampage?collId=pphhphoto&action=browse&fileName=fl/fl0200/fl0293/photos/browse.db&recNum=0&itemLink=&linkText=-1&title2=Seven%20Mile%20Bridge,%20Linking%20Florida%20Keys,%20Knight%20Key,%20Monroe,%20FL&displayType=1&maxCols=4
Lift Bridge
Cape Cod Canal Railroad Bridge. http://en.wikipedia.org/wiki/Cape_Cod_Canal_Railroad_Bridge
Cantilever bridge
The Quebec Bridge (Pont de Québec in French) crosses the lower Saint Lawrence River to the west of Quebec City, and Lévis, Quebec, Canada. http://en.wikipedia.org/wiki/Quebec_Bridge
Forth Bridge http://en.wikipedia.org/wiki/Forth_Bridge http://www.forthbridgeexperience.com/
Through arch bridge
Arrigoni Bridge http://www.flickr.com/photos/brushbin/3582681926/
Sagamore Bridge (US 6) over the Cape Cod Canal in Sagamore Beach. http://www.bostonroads.com/crossings/sagamore/
also Bourne http://www.flickr.com/photos/macedo295/3443136308/in/set-72157622507335970/
Hell Gate Bridge. http://en.wikipedia.org/wiki/Hell_Gate_Bridge
Masonry Arch
The Pont du Gard is a notable ancient Roman aqueduct bridge http://en.wikipedia.org/wiki/Pont_du_Gard
tubular design
Opened on March 5, 1850, the Britannia Bridge was the second bridge across the Menai Straits, this time connecting the Isle of Anglesey to mainland Wales by rail – twenty four years earlier, Thomas Telford’s Menai Bridge had brought a road connection between the two, and now a rail link between the port of Holyhead, on the west of the island, and London was deemed necessary. Robert Stephenson was chief engineer on the project and along with his engineering consultants, William Fairbairn and Eaton Hodgkinson, decided to build it to a tubular design supported by masonry piers, in order for it to be sufficiently stiff to support the heavy load of the trains passing across it. The two main spans of rectangular iron tubing were 460 feet (140 meters) long, and each weighed 1,500 long tons. Two additional spans of 230 feet (70 meters) completed what was essentially a 1,511 feet (461 meter) long girder. Until that time, the longest wrought iron span had been a mere 31 feet 6 inches (9.6 m). Hodgkinson believed that the tubes would also need the support of suspension chains, but Fairbairn calculated that they would prove unnecessary. Local limestone was used for the piers and the tubes were constructed on the banks and then floated on barges and lifted into position by hydraulic pumps. http://www.asce.org/PPLContentWide.aspx?id=25769806582&cmsMode=Preview
Hadley Parabolic Bridge
http://en.wikipedia.org/wiki/Hadley_Parabolic_Bridge
