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Nostalgia & History > 3rd St bridge in SF is/was "largest bascule bridge" in the world?

Date: 08/31/26 16:46
3rd St bridge in SF is/was "largest bascule bridge" in the world?
Author: timz

"Largest" meaning longest movable span, or what?
Longer than any RR bridge? Was it new in 1945?

https://digicoll.lib.berkeley.edu/record/208628?ln=en&v=uv#?xywh=-191%2C-32%2C1916%2C1087

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Date: 09/01/26 01:26
Re: 3rd St bridge in SF is/was "largest bascule bridge" in the wo
Author: danf

The "Lefty O'Douul Bridge" was built in 1933. More info:

Lefty O'Doul Bridge - Wikipedia

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Date: 09/01/26 16:05
Re: 3rd St bridge in SF is/was "largest bascule bridge" in the wo
Author: xrds72

Depends on what they mean by "largest". 

The references cited by the previous poster says the bascule span is 143' long. 

Just one example: the Kinzie St Bascule bridge, in Chicago, built in 1907, designed by Strauss is 170' long.

https://historicbridges.org/bridges/browser/?bridgebrowser=truss/nbrail/. It was built for 2 tracks but is now out of service.

There are probably several others, especially in Chicago, of similar size. 

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Date: 09/01/26 17:26
Re: 3rd St bridge in SF is/was "largest bascule bridge" in the wo
Author: timz

Looks like the movable span of the 3rd St bridge
is only about 145 ft. That pair of Chicago River
bridges must each be 200+ feet.

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