
“A good city is a mix of memory and invention” — Robert Campbell, The Boston Globe
While federal and provincial stimulus funding for infrastructure has essentially come to an end as Canada’s economy has bounced back with some vigor in recent months, dialogue about public infrastructure remains a hot topic. During the downturn infrastructure investments were used to drive employment but were also intended to provide our regional economies with the tools they will need to succeed economically in the decades ahead. While elsewhere in the world (Australia, America, Asia, and Europe, most notably) the discussion focused on visionary projects – economic “trump cards” for a globalized world – like high speed rail, our dialogue in Canada has been more subdued. Whether the investment is in rail, or roads, or parks, or cultural institutions there is always a debate around the cost of the investment vs. the long-term value it will bring. But even in considering value, rarely is the potential reuse of infrastructure taken into account.
In urban design there is a long-standing principle called “robustness.” Robust spaces are those that can adapt to changing uses over time. For example, how does a space adapt if a roadway turns into a pedestrian-only street in the future? Do we take this and other design principles into account when building new infrastructure? In North America do we ask ourselves how a given piece of infrastructure can be reused when it is no longer needed? Not typically, no.
With all of the buzz this past week about the opening of the second phase of the High Line in New York City – the superb reuse of an old railway corridor cutting through the city – I thought I’d take a moment to write about infrastructure reuse in general, and the value (economic, social, environmental and cultural) infrastructure can bring to communities. I also thought I’d point out that New York is not doing anything new. It is simply implementing, on a smaller and less comprehensive scale, what Paris France implemented years ago with an abandoned railway corridor of its own.
Let me share some history and observations about Paris’ Promenade Plantée and the Viaduc Des Arts.
From Viaduct to Promenade
This story begins in 1853, the year the Paris-Strasbourg Railway Company obtained the land and approvals to begin construction of an elevated portion of track from Place de la Bastile, the terminus of the new railway line, to the eastern edge of the city. The line, planned in 1833 and commissioned in 1859, was almost 500 kilometres long, linking the two cities together. Many portions of the line are still in use today but the corridor has been upgraded to accommodate France’s TGV high speed rail system. Within the City of Paris though, the introduction of the SNCF’s RER “A” commuter rail line in the 1960s quickly made the elevated portion of the line obsolete.
Sitting abandoned, the elevated “Viaduc,” its 64 vaults, and the railway station at Place de la Bastile began to fall into disrepair, impacting the local economy of the “craftsmen quarter,” its artists and all those engaged in the cultural industries there. Two options were considered by the L’Atelier Parisien d’Urbanisme, (APUR) Paris’ urban planning authority:
- The cost-side approach: demolition of the Viaduc to accommodate new development and to re-establish the continuity of Rue de Lyon and Avenue Daumesnil.
- The long-term value approach: construct a promenade above the Viaduc and renovate the vaults and several parcels of grey- and brownfield along the former railway line in order to recognize the area’s heritage while creating new opportunities for businesses and future development.
The second option was initially written off as being unrealistic, too expensive, too time consuming and too challenging. But, with enough time, the APUR and public ultimately recognized the value proposition of rehabilitation — it would indeed lead to broader reinvestment in the neighbourhood over time and would create a variety of spaces that could support a wide range of different uses and activities.
How this change of heart came to pass is a bit unclear to me as I’ve had some trouble researching this part of the story, but there may even be a Canadian connection. This is my best hunch. When Place de la Bastile was selected in 1982 as the site for the new state opera house a design competition for the new building was held. The winning competition entry belonged to Carlos Ott, a Uruguayan living in Canada, whose design included a promenade, or pathway system, integrated into the site plan that would make use of the Viaduc.
Construction on the new Opera Bastile and promenade atop the Viaduc got underway within a year. The City appears to have quickly changed its development regulations to ensure that the promenade could extend onto the surface beyond the Viaduc without being interrupted by new development. The City also defined an “officially publicly useful” perimeter around the viaduct and many of the parcels acquired along the route.



The original construction of the Viaduc had divided neighbourhoods and created large portions of orphaned space. The promenade project was seen as a way to reconnect these neighbourhoods and spaces along the corridor by re-establishing access beneath the vaults and by converting orphaned space to accessible public space – parks and squares – and into offices and new apartments that would connect onto the promenade. The inclusion of apartments and offices were an excellent way to ensure that the promenade would have sufficient everyday use and “eyes on the street” to make it safe for those traversing its 4 kilometre length.





In 1994 the first vault was fully restored and by 1997 all 64 of the vaults were restored, with many converted into shops and studios. What did this mean for the project? The Viaduc des Arts was born. Above the Viaduc was the trail system, Promenade Plantée, a peaceful park space intentionally void of commercial activities while at street level new storefronts present residents and visitors with a wide range opportunities to engage with the districts’ craftspeople. Read the rest of this entry »