zephyr98072 wrote:
>
> The trusses were also pin-connected, and the pin joints were worn
> from years of use, and from damage to the truss members from being
> hit by wide loads.
>
>
> Glen Haug
>
There are pin-connected bridges all over the system. Including the
Mississippi bridge at Burlington which has already had the upper truss
modified and they are planning on replacing the swing birdge with a lift bridge.
If there are any bridges or ??? of interest to you get out and document
it NOW as you can't be sure how long it will be around.
Ken Martin
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