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[email protected] · April 25th 17, 10:56 PM posted to uk.transport.london

In article , (Roland Perry)
wrote:

In message , at
04:57:55 on Tue, 25 Apr 2017, remarked:

You could say the same of the busway of course, and probably
have. The Borders Railway is an awful lot longer though.

Maybe didn't have things as difficult as the Ouse viaduct and the
Trumpington cutting to deal with.

They certainly did. A tunnel needed major works and the Hardengreen
viaduct is longer than the Ouse one UIVMM.

The Ouse viaduct is 220m (Guided bus leaflet Jan 2009), and the
Hardengreen one approximately three sprinter carriages (from photos,
so about 75m).

The total Hardengreen structure is longer than that. More like 100m
and looks longer than the Ouse viaduct.

It's an embankment on dry land, not a bridge over a river and flood
plain. The part which spans the road is just two short sections of
concrete beam with a central pillar.

But it had been totally removed while the Ouse Viaduct was basically
still complete.

Doesn't matter. The 220m spans of the Ouse viaduct are much more of
an engineering challenge than 75m of spans at Hardengreen plus some
solid embankments.

Anyway, this is a silly argument. There are lots of other structures on
the Borders Railway and only the Ouse Viaduct on the busway.

Trumpington cutting, new bridge on Long Road, bridge over the railway
to Addenbrookes...

Compared to many miles of Borders Railway with lots of bridges and tunnels
too. Stop being silly.

--
Colin Rosenstiel