In message
-sept
ember.org, Recliner wrote:
I don't believe that absurdly low cost figure. In 1992 terms, the cost of
the full Piccadilly line extension, including the four stations, was
probably well over £250m, maybe closer to £500m.

Rails Through The Clay, which is usually pretty accurate on things,
states that the original Heathrow extension was estimated at 15 million
in 1970, with the final figure given as 30.2 million in 1978. Hounslow
West to Hatton Cross civil engineering was 4 million. Tunnelling on to
Heathrow Central was 2.25 million; the station was another 1.2 million
(those three are all contract prices). The 1973 Tube Stock cost 40.25
million for 87.5 6-car trains. If I've calculated things correctly, the
extension added 4 trains to the requirements for the line (15 minutes
extra running time, 15 tph service at the time), so 1.84 million. Don't
ask me where the rest of the money went.

At opening, the fare to central London was 80p.

The T4 loop was 27 million, of which 10.6 million was tunnelling.

HEX, which was under construction when the book was published, is listed
as 280 million.

Someone else can try converting these to today's money.

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