Bridge carrying the A554 road across the mouth of Alfred Dock, Birkenhead. A small green light indicates that pedestrians and cyclists may proceed on to the bridge.
<a href="//commons.wikimedia.org/wiki/User:Obhf_Three" title="User:Obhf Three">Obhf_Three</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>