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Heritage classified

Key figures

Origin and history

The Pont Neuf de Montauban, built in the early 20th century, is a reinforced concrete structure crossing the Tarn and the Lissac Canal. It was designed to meet a dual need: to facilitate the traffic of departmental trams and to improve access to the city from the left bank of the Tarn. Its project, initiated in 1907 by the General Council of Tarn-et-Garonne, is part of a desire to modernize local infrastructure, while taking into account the river's hydrological constraints, known for its rapid and powerful floods.

The call for tenders for its construction was launched in 1910, following a financial agreement between the city of Montauban and the department, established by a deliberation of 10 April 1907 and a protocol signed on 17 August of the same year. The chosen project, that of engineer Simon Boussiron, innovates by its system of jointing of vaults in three points, reducing their thickness and optimizing the resistance to floods. The jury, including experts such as Charles Rabut and Augustin Mesnager, imposed changes to the original project, including the separation of two separate bridges: an arch bridge on the Tarn and a bowlstring on the Lissac Canal, a more economical and aesthetic solution.

The works, estimated at 500,000 francs, began in 1911 under the direction of Simon Boussiron, with funding shared between the state, the department and the city. The bridge was inaugurated on 29 June 1913, after successful resistance tests. Although designed for trams — whose line was operational only from 1926 and abandoned in 1933 — it was originally open to public traffic. Its electric lighting, decided in 1912, and its wrought iron railings add to its monumental character.

The Pont Neuf is distinguished by its avant-garde technical solutions for the time, such as the use of high-strength cement and obviously maximum tympanums to limit flood obstruction. These choices, validated by renowned engineers, make it a model of adaptation to natural and urban constraints. Ranked as a historic monument in 2005, it now bears witness to the ingenuity of early twentieth century builders and the evolution of transport in Occitanie.

Its history also reflects the administrative and financial tensions between local actors, particularly around cost sharing. Despite these disputes, documented in the archives, the project results in the convergence of interests between the development of trams, Montauban's needs for clearing up, and technical advances in reinforced concrete. The bridge, owned by the department, remains a symbol of the transition between the industrial era and urban modernity in France.

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