the quarter-mile long causeway system, which required earth fill embankments about twenty-five feet across at the top and up to about twenty-five feet in height to span the broadened river that would back up behind the dam, was an impressive civil engineering work for the period.
a camelback steel through truss structure built in 1910 to 1911 that spans the channel of the Menominee River on the Michigan-Wisconsin border.
The Upper Twin Falls Bridge was closed to traffic in September 1971.
https://www.jsonline.com/story/news/local/brookfield/2016/11/08/friends-take-adventure-inspired-brookfield-mother/93470560/
https://www.wisconsinhistory.org/Records/NationalRegister/NR2366
https://www.facebook.com/pg/uppermi/photos/?ref=page_internal
Not even bicyclists and hikers? I love those bridges, and will gladly park the motorcycle just to walk across....
ReplyDeletebikers and hikers can, I meant closed - to normal expectations of bridge business.... vehicle transportation. It's still used by hikers, bikers, and divers
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