Pont d'Asfeld, Stone bridge at Vauban Fortifications in Briançon, France.

Pont d'Asfeld is a single-arch stone bridge over the Durance gorge, linking Briançon to the Fort des Têtes. Its arch spans 38.60 m, widened from 16 to 19 toises because the vault had to rest on sound rock. More than 2,000 stone blocks were set on a wooden centring; the deck was finished in 1731 and the bridge inaugurated in 1734.

Construction took place from 1729 to 1731 as an improvement over an earlier wooden crossing used for military purposes. The project formed part of a larger fortification development in the region during the early 18th century.

Locals called it the "Pont du Diable" as well as the "Pont de la Communication" before it took the name of the Marquis d'Asfeld, who ordered its masonry construction. A small pointed stone marker stands at the centre of the deck. Since 2008 the bridge has been listed by UNESCO with Vauban's fortifications of Briançon.

The bridge is easily accessible from the old town and provides a safe crossing over the gorge for all visitors. From here you can access the fortifications on the opposite side and enjoy views down the valley.

The arch was closed on 24 August 1730 after 127 days of work, and when the wooden centring was removed the vault settled by only two inches. More than 2,000 stone blocks were needed, brought rough-hewn down the Durance and finished on site.