disaster 2.5 - bridge disasters
the quebec bridge - when
1907 and 1916
the falls view bridge - when
1938
the tacoma-narrows bridge - when
1940
I-35w bridge - when
2007
the silver bridge - why
39 years earlier, there was a failure in a eyebar chain pin and then under the traffic's speed and load, the chain failed and it snapped
the tay bridge - when
Dec 1879
the quebec bridge - why (1916)
a boat hit the support of the bridge, which weakened the support
I-35w bridge - where
across the Mississippi River in Minneapolis, MN
the silver bridge - where
across the ohio river between point pleasant, west virginia and kanauga, ohio
the quebec bridge - why (1907)
consulting engineer was put in charge, saw issues with the under-funded and corners cut in testing, and tried to stop it = people continued building without permission
the silver bridge - when
december 15, 1967
I-35w bridge - why
maintenance wasn't kept up due to not wanting to spend money
the tay bridge - where
over the river tay near the Dundee, Scotland
the quebec bridge - where
quebec, canada over the st. lawrence river
the falls view bridge - why
the bridge was not maintained and was not built to deal with the icy environment
the tay bridge - why
the connecting pin could not stand strength of the gales and the speed of the train
the falls view bridge - where
the niagara falls gorge
the tacoma-narrows bridge - why
the solid plate girders were used instead of something with holes in it to allow the wind to flow through = swayed really badly roadway was too light = wind swayed wind tore it apart
lessons learned
- bridges do not build themselves - bridges do not take care of themselves - building a "cheap" bridge is most often not cheap - large engineering projects are really bad playgrounds for egos and half-hearted commitments to work
the tacoma-narrows bridge - where
Tacoma, WA
