Green Lake – Pont de Pierre (Stone Bridge) loop from Cenon

Green Lake – Pont de Pierre (Stone Bridge) loop from Cenon

Moderate

4.0

(5)

riders

Green Lake – Pont de Pierre (Stone Bridge) loop from Cenon

03:20

58.0km

200m

Gravel riding

Moderate gravel ride. Good fitness required. Mostly paved surfaces. The starting point of the route is accessible with public transport.

Last updated: October 16, 2026

Tips

Includes a segment in which cycling is not permitted

After 53.5 km for 54 m

Waypoints

Start point

Train Station

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12.7 km

Parc de Cotor-Laburthe

Forest

16.9 km

Ornon Mill

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gradignan.fr/annuaires-de-batiments-structures/annuaire-de-la-ville-260/parc-du-moulin-d-ornon-408.html?cHash=99635050a24dfbb265fd2753ff3e3b8d

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17.2 km

Bridges over the Bourde Stream

Highlight (Segment) • Bridge

little trenquil stroll in the city and nature along the bourde

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19.8 km

Moulin de Rouillac

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The Rouillac mill is one of several mills built on the passage of the Eau Bourde.

Today the mill is the subject of an educational project on renewable energies.

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31.8 km

lac

Lake

34.9 km

Beach

37.3 km

The Green Lake is a body of water about twenty kilometers from Bordeaux in the town of Canéjan. Fishing on this 7.5 hectare body of water is possible with a fishing license. Many species of fish are well represented in Lac Vert, including pike, smallmouth bass, carp or roach. The local fishing club regularly organizes trout releases.

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43.4 km

Parc de Papaye

Forest

47.5 km

Thouars Castle and Woods

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Château and park of Thouars in Talence. The park is free to enter, with large lawns and walking paths. The castle cannot be visited but hosts temporary exhibitions on an ad hoc basis.

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53.5 km

Grosse Cloche of Bordeaux

Highlight • Monument

There are great impressive city gates to discover here

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54.4 km

View of Pont de Pierre

Highlight • Bridge

The stone bridge was designed by engineers Deschamps and Billaudel with the aim of connecting the two banks of the Garonne. It is the first bridge built in the city.

This stone bridge spans 487 meters and was opened to traffic in 1822. Since 2018, it has been reserved for pedestrians and cyclists. Caution ! Public transport still has the right to pass.

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54.9 km

Pont de Pierre (Stone Bridge)

Highlight • Bridge

The Stone Bridge connects the left bank of the Garonne (Cours Victor Hugo) to the right bank Bastide district (Avenue Thiers). It measures 487 m long and 19 m wide. It constitutes the legal boundary between the maritime domain and the river domain in the port of Bordeaux. The true meaning of the French expression "stone bridge" is "masson bridge". In fact, the bridge is built mainly of brick and not stone.
The first bridge over the Garonne in Bordeaux, the Pont de pierre was planned and designed during the First French Empire, under the orders of Napoleon I. While campaigning in Spain, he needed his troops to cross the river quickly, and the initial plan envisioned a wooden bridge, which was easier to construct. Until then, we had to cross the river by boat. Due to lack of means, construction took place subsequently, during the Bourbon Restoration, from 1819 to 1822. During these three years, the builders were faced with numerous challenges due to the strong current and the high amplitude tides, 6 m, at this point in the river. They used a diving bell borrowed from the British to stabilize the bridge piers.
The bridge has 17 arches (according to legend the number of letters in the name 'Napoléon Bonaparte'). On the sides, each pile of bricks is topped with a white medallion which must have received the number of Louis XVIII of France, a double L.
It was the only bridge in Bordeaux until the completion of the Passerelle Eiffel railway bridge in 1860 and the only road bridge until the construction of the Pont Saint-Jean (Bordeaux) in 1965. The bridge and its tide is a point important part of the Grand Gabarit Route, the logistics program transporting parts for the production of the Airbus A380.
The curiosity of the Stone Bridge lies in its interior: it is hollow, full of galleries and staircases which allow its structure and stability to be controlled. Because despite its length (nearly ½ kilometer), this structure demonstrates a certain flexibility to adapt to the movements of the Garonne, and to the loose alluvial bottoms on which it rests. Its 16 piles each rest on approximately 220 metal and wood piles (fir and Landes pine) driven into the sandy mud, themselves reinforced by a system of riprap. Its foundations are fragile and it is now threatened by various pathologies; its 500,000 bricks sag by 2 to 3 mm each year. This is why it is kept under surveillance using movement sensors and an inclinometer placed in the interior galleries. spotsfrance.com/2022/05/le-pont-de-pierre-premier-pont-de-bordeaux
Since 2016, the condition of the bridge now makes it permanently closed to traffic except for pedestrians, cyclists, trams, buses, taxis and emergency vehicles.

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