They bridged the Esk downstream from the fort, and thus established the line of the main eastern approach to Scotland's capital for most of the next 2,000 years. The bridge built by the Romans outlasted them by many centuries. It was rebuilt on the original Roman foundations some time before 1300, and in 1597 it was rebuilt again, this time with a third arch added on the east side of the river. The Old Bridge is also known as the Roman Bridge and remains in use today by pedestrians. To its north is the New Bridge, designed by John Rennie the Elder and built in 1806. This in turn was considerably widened in 1925.