[1COUNTER-MORTER-68]

Hey,,,How much SALT is used on that bridge in the winter ??...
The bridge had an automatic deicing system. Of course, cars could track salt onto the bridge which could eventually drain into the supports. Chloride corrosions are some of the worst types of corrosion known (especially chloride stress corrosion cracking). Presumably the State would inspect/clean periodically to prevent corrosion failures. Of course, that still needs to be determined (if it was actually the cause).
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TANKS a bunch for that info,,,I had no idea,,,I’m way down in Louisiana,,,When we get ice they go krazy with the salt around here,,,The 1933 bridge over the Red River(Shreveport)
is in bad shape,,,Two ‘60 bridges just south of that one are/have being totally replaced...

[metmom]

Bridges and roads and virtually everything here in NY is coated with salt from the time the first snow flies, usually Nov or Dec, until about April. Occasionally it’ll rain during the winter and rinse things off some, but the amount of salt on the roads around here for about half the year is incredible.

I could see Minnesota having a similar situation being so far north.