Re: Mega bridge building.

Posted by dpendzic on February 19, 2019 at 11:08:46 from (96.240.227.202):

In Reply to: Re: Mega bridge building. posted by Jeffcat on February 19, 2019 at 08:59:34:

yes the methods have changed--that has to be an old bridge as you can see the first plate was riveted of which they don't use e any more---we replace deteriorated rivets with high strength bolts---now the feds require every bridge to be inspected every 2 years--so you have to assume that fracture is under 2 years old--actually appears to be fairly fresh
also vehicle loads and the number of them have increased also since it was designed

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