Set the timer to 127 seconds

How to use the online timer

While you watch the pedestrian bridge swing aside, keep an eye on the canal traffic and the moving barriers rather than the screen. A countdown of one hundred and twenty-seven seconds covers a brief opening without demanding constant clock-checking, so your attention can stay on children, a bicycle or the towpath around you. The signal marks the expected end of the wait, not permission to cross.

Beside an open canal bridge, switching to another app is less risky than closing the page completely. Closing the tab or browser may stop the countdown or silence its alert, depending on the phone and its settings. If you need navigation or messages while waiting, leave the timer tab open and return to it, while continuing to follow the bridge lights, barriers and instructions from the operator.

As the bridge settles back into place, allow a little time after the signal before moving towards the crossing. A boat may pass slowly, another vessel may be close behind, or the mechanism may need several extra moments to lock. If the route clears sooner, the remaining time can simply be ignored; if it clears later, wait behind the barrier. Keeping that small margin also helps if your next task is catching a bus or meeting someone nearby, because the alert is a prompt to reassess the crossing rather than a fixed departure time.