From Bwtm



ASCE Bridge Calendar



Bascule bridge

1200 Ton R.R. Bridge over Cape Cod Canal, Buzzard's Bay

Swing bridge

Seven Mile Bridge, Linking Florida Keys, Knight Key, Monroe, FL,%20Linking%20Florida%20Keys,%20Knight%20Key,%20Monroe,%20FL&displayType=1&maxCols=4

Lift Bridge

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.

Forth Bridge

Through arch bridge

Arrigoni Bridge

Sagamore Bridge (US 6) over the Cape Cod Canal in Sagamore Beach.

also Bourne

Hell Gate Bridge.

Masonry Arch

The Pont du Gard is a notable ancient Roman aqueduct bridge

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.

Hadley Parabolic Bridge