Going over the top on the Queensferry Crossing today - head for heights required!

The team is cleaning the cables as part of a trial to measure the impact of soiling on the formation of ice.

More on this project here: https://t.co/4PIJSG07Cl#M90 pic.twitter.com/X7ZRDQl7TM

— BEAR SE Trunk Roads (@SETrunkRoads) September 2, 2021