PICTURES: Inside the flooded historic Chapel on the Bridge crypt

Tidemarks can be seen on the prison cell doors

It is understood this weekend’s Remembrance service at the site will still go ahead — weather permitting — as only the cellar of the medieval bridge chapel is currently under water (below).

Our pictures show the 15th century cellar under about 2-3ft of water this morning (Friday) — but tidemarks on the doors of the former prison cells show it had been around double that level.

Other businesses on neaby Bridge Street have also been flooded.

The chapel was built in 1483 and was used by travellers to pray for a safe journey or to give thanks for a safe arrival in Rotherham.

In 1778, work began on converting the almshouse to a prison at the cost of £136. But when a new courthouse and jail opened in 1826, the chapel was rented as a house. And by 1888 it was used as a tobacconist and newsagents.

The bottom of the chapel is shaped like the bow of a ship to allow fast water in the River Don to flow easily down both sides — not just hit a solid wall.

It is one of four surviving medieval bridge chapels in the country.

The nearby Bridge Inn pub was badly hit overnight. Water was still pouring into the pub this morning through a smashed widow in the men’s toilet, which overlooks the River Don (below).