re: Pylons in the water 1-10w on spillway

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I’ve always wondered what those pylons were for in the water on the right off I-10 going west. Water is really low and you can see the full structure. Anyone know?

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its to catch the trees and other debris that washes through the spillway when they open the locks. the idea was to prevent navigation hazards being created and such.

it worked well for what it was but now the mud filled in so things just get washed over the tops of them but every so often you see a big tree hung up on it after they close the locks.

the ones to the left used to be a rock wall enclosed by wooden wall like structure to help prevent erosion by the railroad tracks there