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Roland Perry · April 25th 17, 10:57 AM posted to uk.transport.london

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...
--
Roland Perry