TR/011

Maintenance on Kingsferry Bridge should be routine. Then the expansion joints begin striking with no traffic on the deck, water behaves wrongly beneath the lifting span, and a forgotten Quiet Service file surfaces: Transit Regulation 011.

The rule is simple. Passage through the Lower Swale must remain open. The engineering implications are less so.

When modern infrastructure collides with an obligation older than the bridge itself, James, Nell and Armitage must work out what counts as a crossing before the Swale decides for them.