Birmingham

Worcester Bar at Gas Street, Birmingham. This narrow gap is where the Worcester and Birmingham Canal meets the Birmingham Canal Navigations. Ahead, the canal passes below Broad Street.
Originally there was a 7 foot wide barrier between the two canals, over which cargo had to be manhandled, until the stop-lock channel (pictured) was built, with toll houses for each canal company. The footbridge is in fact modern, built in the traditional BCN style.

See Google Aerial View of this location.