under-bridges

Updated: June 2, 2025

There were many mountain streams, swollen to torrents in winter, crossing under the canal, for which abundant water-way had to be provided, involving the construction of numerous culverts, tunnels, and under-bridges of large dimensions. There were also powerful sluices to let off the excess of water sent down from the adjacent mountains into the canal during winter.

Samuel Smiles - The Life of Thomas Telford; civil engineer with an introductory history of roads and travelling in Great Britain