Bollards remaining from <a href="https://en.wikipedia.org/wiki/Meeker_Island_Lock_and_Dam" class="extiw" title="en:Meeker Island Lock and Dam">Lock and Dam No. 2</a>, Mississippi River, St Paul, Minnesota, USA.  Lake Street-Marshall Bridge in background.
<a href="//commons.wikimedia.org/wiki/User:McGhiever" title="User:McGhiever">McGhiever</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>