Pont de la Dame

Pont de la Dame is a stone road bridge in Saint-Pierre-de-Chartreuse (Isère, Auvergne-Rhône-Alpes), standing at the entrance to the hamlet of La Diat in the heart of the Chartreuse massif. The bridge has been listed as a French historic monument (monument historique classé) since 28 October 1927 and remains municipal property.

Where exactly is the bridge?

Pont de la Dame sits at the entrance to the hamlet of La Diat, a short distance from the center of Saint-Pierre-de-Chartreuse, on the road leading up the valley toward the foot of Charmant Som. This is a quiet, mountainous corner of the commune — away from the village's main sights, but well known to local walkers and to drivers heading further up into the massif.

What is the history behind it?

The site where Pont de la Dame stands is tied to the old industrial infrastructure built by the Carthusian monks: nearby are the remains of a former sawmill that once belonged to the Grande Chartreuse monastery. For centuries the monks harnessed water flowing down from the massif to power saws and mills scattered through the valley, and the bridge formed part of the network of crossings linking these working sites together. The structure classified in 1927 functions today primarily as a road bridge, though its location still recalls the valley's industrial past.

Pont de la Dame should not be confused with another listed bridge in the same commune, Pont du Martinet over the Guiers Mort, a former forge bridge dating from 1653-1659. Both stand in Saint-Pierre-de-Chartreuse, but at different points along the valley and with distinct histories.

What can visitors do nearby?

Just past Pont de la Dame is a car park by the local swimming pool ("la Piscine"), a popular starting point for several walking routes into the Chartreuse massif. From here, trails lead up to the summit of Charmant Som (1,867 m), around the "Pierre Mesure" rock-formation loop, and along an easy path connecting La Diat to the hamlet of Saint-Hugues, home to the Musée Arcabas of contemporary sacred art. The bridge itself, as the visual gateway to the valley, is often photographed by hikers setting off on these trails.

Who is this spot for?

Pont de la Dame is not a museum-style attraction in its own right, but rather a distinctive landmark on the way into the Chartreuse valley's hiking network. It will appeal to visitors planning longer mountain walks in the area, as well as to anyone interested in the local industrial history left behind by the Carthusian order.

Frequently Asked Questions

Is Pont de la Dame a listed monument? Yes, the bridge has been registered as a French historic monument (monument historique classé) since 28 October 1927, and it belongs to the commune of Saint-Pierre-de-Chartreuse.

Which trails start near the bridge? The car park just past the bridge, by the swimming pool in La Diat, is the starting point for routes to Charmant Som (1,867 m), the "Pierre Mesure" loop, and the connecting path to Saint-Hugues and its Musée Arcabas.

Is this the same bridge as Pont du Martinet? No. Pont du Martinet is a separate former forge bridge over the Guiers Mort in the same commune, dating from 1653-1659. Pont de la Dame stands elsewhere, at the entrance to La Diat, and is linked to the history of the Carthusians' former sawmill.

Is it worth stopping here? Yes, especially if you're setting out on one of the walking routes that start from the car park by the bridge — it makes a natural, scenic starting point for excursions into the Chartreuse massif.