The River Yare cuts off Great Yarmouth from other areas of the borough such as Gorleston and Southtown and so the town's two bridges have become major transport links. Originally Haven Bridge was the only link over the river, but in the late 1980s Breydon Bridge was built to take the A12 over Breydon Water, replacing the old railway bridge of Breydon Viaduct. Both are lifting bridges, which can be raised to allow river traffic to pass through. This can result in traffic tailbacks, and the phrase "the bridge was up" has become synonymous in the town with being late for appointments.