Le Passage: Twin Footbridges Turn Paris' Dormant Petite Ceinture Into a Walkable Public Spine

The hardest thing to do with an abandoned railway is very little. Le Passage commits to that discipline. Instead of paving over the tracks of La Petite Ceinture in northern Paris or crowning the cutting with a signature structure, the project leaves the rails exactly where they are and builds a quiet apparatus of walkways, ramps and platforms around them. The railway stays the protagonist; the architecture becomes the means of finally reaching it.

Designed by Elisa THEBAUD, credited alongside ENSAB, the proposal was named an Editor's Choice entry in the Salut Paris competition. Its site is a stretch of the old loop line that once circled the city and has since fractured into an underused corridor, partly reclaimed by vegetation and informal use, largely sealed off from the dense neighbourhoods that press against its retaining walls. THEBAUD reads this residue not as a void to be filled but as a layered section of walls, tracks, planting and urban edge, and that reading drives every move that follows.

Walking Above the Cutting Without Erasing It

The opening rendering sets out the project's central relationship. A sloping elevated walkway runs beside the sunken rail cutting, edged by a slatted wall that filters views rather than blocking them. The tracks remain below, untouched, while the new path lifts the visitor into a position from which the infrastructure can be read as a whole. This is adaptive reuse as a stance rather than a technique: no demolition, minimal construction, and an insistence that the existing condition stays legible.

Two primary footbridges run parallel to the railway, extending the site's linear logic instead of fighting it. The narrow, elongated corridor is treated as a defining trait, and the walkways amplify that length. What keeps the experience from becoming a monotonous promenade is the slope itself: the deck tilts, rises and falls, so movement along the line becomes a sequence of shifting heights and vantage points over trees, rails and the city beyond.

A Glazed Room Tuned to the Birch Trunks

Inside, the language softens. A glazed gallery uses slim vertical timber mullions that echo the birch trunks visible outside, so the boundary between interior and landscape reads as a rhythm rather than a wall. A display table of vessels and gathered visitors suggests the kind of light, temporary occupation the project favours: exhibitions, markets, workshops, whatever the season calls for.

This flexibility is deliberate. Le Passage rejects fixed programming in favour of modular platforms that can host different activities without locking any one of them in place. Public space is understood here as something that evolves with its users, and the gallery's restrained timber frame gives that evolution a calm, neutral backdrop.

A Pavilion That Straddles the Tracks

The misty view down the cutting is the project's most telling image. A wooden ramp descends alongside the railway toward a gabled pavilion that bridges the tracks, set between apartment blocks that have long turned their backs on the line. The gable's simple domestic profile is a smart choice: it reads as familiar rather than monumental, signalling to neighbours that this territory now belongs to them.

Where the footbridges cross, the scheme generates nodes, and these are where its social ambition takes hold. The crossings work as informal gathering points, places to pause, meet or simply look down the length of the corridor. By moving people between elevated and ground-level conditions, the ramps turn circulation into an event, and the pavilion marks where that event concentrates.

Stepped Seating as an Open Invitation

The courtyard rendering brings the scale down to the everyday. A stepped seating stair, an amphitheatre-like configuration, faces a glazed ground floor, while a mother and child walk toward wide, generous steps under a leafy tree. The stair carries a double role: a formal setting for collective events and a casual perch for anyone passing through.

Inclusivity is a stated objective of the proposal, and the figures chosen for this image make the point plainly. Wide steps, gentle ramps and open thresholds suggest a public realm built for a broad range of users rather than a curated few. The amphitheatre gives the corridor a civic centre without compromising the loose, adaptable character of the rest of the scheme.

Why This Project Matters

Cities around the world are inheriting obsolete infrastructure faster than they know what to do with it, and the reflex is often either to erase it or to over-design it. Le Passage offers a third path. By keeping the rails as the narrative spine and confining new construction to walkways, platforms and a few light pavilions, THEBAUD shows that a corridor's history can be its organising principle rather than an obstacle to clear.

The project's strength lies in its restraint and its precision. Linearity becomes a sequence, slopes become experience, crossings become social space, and programme stays open enough for the neighbourhood to write its own uses into the site. For a competition asking how to celebrate Paris, it is a persuasive argument that the city's best future spaces may already be hiding below street level, waiting for a careful hand rather than a grand gesture.

View the Full Project

About the Designers

Designer: Elisa THEBAUD

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Project credits: Le Passage by Elisa THEBAUD Salut Paris (uni.xyz).