This viaduct carries the Perth to Aberdeen railway line across the South Esk River at Montrose, Angus.  First ScotRail's 170454 is crossing with a train from Edinburgh to Aberdeen.
<a href="//commons.wikimedia.org/wiki/User:Geof_Sheppard" title="User:Geof Sheppard">Geof Sheppard</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>