156508 crosses the River Esk at Metal Bridge on 17 May 2002 with the 10:00 Stranraer to Newcastle ScotRail service. The small hamlet of Metal Bridge (basically just the Metal Bridge Inn and a few houses) is not named after this bridge, or indeed the nearby road bridge. It takes its name from Thomas Telford's 1820 bridge, which was replaced by a concrete structure in 1916. Funnily enough the local residents didn't change the name of the settlement to Concrete Bridge!