Service Road Trunnion Bridge over Aux Lock at Mississippi L&D #14

(Satellite, approximate since it is new and does not show up on a satellite map)

This bridge accesses the island between the Le Claire Canal and the Mississipppi Lock and Dam #14. It goes over a lock that is used by the USACE maintenance equipment. The commercial lock is further east.

Jan Danielsen posted five photos with the comment: "Up and then down., The new Bascule Bridge in the canal near lock and dam 14. Pictures taken from Pleasant Valley, Iowa. 10-27-26."

Douglas Butler shared with the comment: "Credit to Jan Danielsen : The new Lock & Dam 14 Drawbridge is in Pleasant Valley, IA."

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[The building and fixed bridge that is in this photo. So the new bridge is upstream from the old fixed bridge. The design of the bridge is simple; it uses two hydraulic rams to move it. In the photos below you can see the counterweight.]

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In order to use this lock, they would have to removed the fixed bridge. Here is a view where they are placing a barge under the bridge to remove it.

Walkway View, Nov 2015

And here we see the bridge "parked" upstream of the upper gate from a boat that is going upstream in the lock.

Boat View, Oct 2015

And they probably have to put the bridge back after the boat leaves. The new drawbridge will save them a lot of hassle with the fixed bridge for each locking.