The Airport
The Airport Built on Stilts: Madeira's Runway Over the Atlantic
Roughly the last kilometre of Madeira's runway is not on land at all — it floats on a forest of concrete pillars above the Atlantic.
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Is Madeira's runway really built on stilts?
Roughly the final kilometre of Madeira Airport’s 2,781 m runway is not on land at all. It sits on an elevated reinforced-concrete platform carried on about 180 columns, some up to around 70 m tall, spanning a shallow bay and a coastal ravine about 57 m above the Atlantic. Opened in 2000, it is effectively a giant viaduct for aircraft — which is why Funchal is nicknamed the airport “built on stilts”.
Why is Madeira’s runway built on columns over the sea?
Because there was nowhere else to put it. Madeira Airport (IATA FNC, ICAO LPMA), at Santa Cruz east of Funchal, is wedged between steep mountains and the Atlantic, with a coastal ravine cutting across the only available alignment. Filling the deep, ecologically sensitive bay with landfill was impractical, so engineers extended the existing clifftop runway out over the water on an elevated deck instead.
The original runway opened on 8 July 1964 at just 1,600 m — dangerously short for jet traffic, with almost no margin for error. That danger turned tragic on 19 November 1977, when TAP Air Portugal Flight 425, a Boeing 727 arriving from Brussels via Lisbon, landed long and fast on a wet runway, overran the end, plunged down an embankment and broke apart on the beach below. 131 of the 164 people aboard died. It remains TAP’s only fatal accident and was the deadliest crash on Portuguese soil at the time. (It has since been surpassed: the 1989 Independent Air disaster in the Azores, with 144 dead, is the deadliest on Portuguese territory.)
A first extension, built 1982–1986 with structural design associated with Prof. Edgar Cardoso, lengthened the runway only modestly to about 1,800 m — still too short for many jets. The bold solution came later.
What exactly is the structure?
The famous extension opened to traffic on 15 September 2000, lengthening the runway to 2,781 m (9,124 ft), designation 05/23. Around the final 1,000–1,020 m sits on an elevated reinforced and prestressed concrete platform — a road-style viaduct sized for aircraft.
| Feature | Detail (approximate) |
|---|---|
| Total runway length | 2,781 m (9,124 ft) |
| Elevated platform length | ~1,000–1,020 m |
| Platform width | ~178–180 m |
| Deck height above sea | ~57 m |
| Supporting columns | ~180, up to ~70 m tall |
| Design load | aircraft up to Boeing 747 size |
| Construction period | ~1996–2000 |
| Reported cost | ~€520 million |
Structurally it is not one long-span bridge but a sequence of portal frames: large circular columns spaced roughly 32 m apart, carrying long portal beams that in turn support a bi-directionally post-tensioned concrete deck thick enough to absorb the pounding dynamic loads of landing aircraft. We cover the structural detail — the foundations driven up to 60 m deep, the engineers and contractors — on the engineering page.
Why is it considered such a feat of engineering?
Because it extends an existing clifftop runway out over water and a ravine on a forest of columns, rather than reclaiming the sea. That makes it genuinely unusual among the world’s constrained-site airports.
- Kansai (Osaka) and Hong Kong’s Chek Lap Kok sit on purpose-built artificial islands.
- Wellington uses a cut-and-filled isthmus.
- Gibraltar’s runway famously crosses a public road; Gisborne’s crosses an active railway.
Funchal alone carries a runway on a viaduct over the Atlantic — which is exactly why “the airport built on stilts” stuck. The structural concept is credited to Portuguese engineer A. Segadães Tavares (firm STA), with construction most often attributed to Brazilian contractor Andrade Gutierrez and the airport owned and operated by ANA Aeroportos de Portugal.
How has it been recognised?
The extension has collected the structural-engineering world’s highest honours. It won the IABSE Outstanding Structure Award in 2004 — informally called the “Oscars of structural engineering” — and Guinness World Records later recognised it (entry dated 12 December 2011) as the airport with the longest bridge-supported runway extension, at 1,020 m. Full detail is on the awards page.
Frequently asked questions
Is Madeira Airport really built on stilts?
Roughly the final kilometre of the runway sits on an elevated reinforced and prestressed concrete platform carried on about 180 columns over a bay and a coastal ravine. It is a viaduct for aircraft, not a runway on solid ground, which is why it is nicknamed the airport "on stilts".
When was the Madeira runway extended over the sea?
The famous extension opened to traffic on 15 September 2000, lengthening the runway to 2,781 m. It is sometimes misdated to 2007; the column-supported deck has been in service since 2000.
Why was the runway built on columns instead of reclaimed land?
Conventional landfill into the deep, ecologically sensitive bay and across the coastal ravine was impractical, so engineers built an elevated deck on columns instead — extending an existing clifftop runway out over water rather than filling the sea or building an island.
How long is Madeira's runway now?
The runway (designation 05/23) is 2,781 m (9,124 ft) long, up from the original 1,600 m of 1964. About 1,000–1,020 m of that length sits on the elevated platform.
What prompted the extension?
The short original runway left almost no margin for error and was a factor in the 1977 TAP Flight 425 disaster, in which 131 of 164 aboard a Boeing 727 died after overrunning the runway. Lengthening the runway safely became a priority.