© Michel Denancé

La Troche Footbridge

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City, Country Saclay, France
Year 2018–2022
Client Établissement public d'aménagement Paris-Saclay
Architect Bassinet Turquin Paysage
Services Structural Engineering
Facts Length: 21.6 m

The development project consists of creating a direct and practicable path through the E. Chanlon forest park, close to the former sandstone quarry, which has become a climbing site. From Corbeville Street to the country road n°60 of Corbeville, the walker is accompanied by a continuous steel handrail in the manner of an "Ariadne's thread".

The footbridge is 21.6 metres long and 2 metres wide. The finished level of the deck is 149.30 NGF. The lowest level of the valley is approximately 144.80 NGF. The maximum height under the deck is 4.50m. It comprises steel posts that support the prefabricated concrete deck and serve as a guardrail post. The guardrail comprises a steel tube handrail fixed to the bars and a stainless steel mesh. The foundations under the posts consist of a concrete footing on micro piles.

The staircase is 13.80 metres long and 2 metres wide. The low level is 149.55 NGF, and the high level is 155.80 NGF.

Structural Engineering
© B+G
© B+G
© Michel Denancé