The road that went over the bridge was not very safe because of the strong winds. Workers made the bridge stronger in 1840. The bridge road was made of wood, and in 1893 it was replaced with steel. The bridge only allowed cars and trucks that weighted up to 4.5 tons to go over the bridge. This made it hard for big trucks to bring goods to the island. In 1938 they installed wrought iron chains to make the bridge strong. In 1999, the bridge closed for one month. The road was fixed and the bridge was made stronger. When it was closed, people had to drive over the Britannia Bridge to get to the island. 