02 September 2014

Lancashire Bridges: 4. Denny Beck Bridge

This bridge is something of mystery: I've been able to find nothing of any significance about it either in my library or on the internet. I don't know when it was built, or why, or who designed or built it. If you have answers, please post in the comments!

It is a single-lane highway bridge, operated without traffic lights. It consists of two metal lattice girders at the edges of the deck, each with two planes of lattice web. The bottom chord of each truss, and any crossbeams, are encased within a concrete deck slab.

The superstructure is supported from a series of cross-braced metal trestle piers. These have inclined legs on the upstream side to protect them against impact from river-borne debris.

The metalwork is riveted, which dates the original bridge construction to 1960 or so at the very latest, and probably much earlier. A bridge of broadly similar construction at Heatherslaw Mill in Northumberland dates to the 1870s.

Update 4th September 2014:

The comments to this post offer further information on this bridge, and see also pages 206 and 207 of http://www.drakkar.co.uk/ch13.pdf.

Further information:


crisb said...

This also appears to be known as Halton bridge. I imagine it will be wrought iron and the concrete casing is a later addition.


This bridge was built in 1913 to connect Halton village with its station, on the opposite side of the river. It is the third bridge on this site, and was built using parts of the old (1861) `Greyhound' Midland Railway bridge in Lancaster SD4762.
The railway closed in 1966 but it was many years before the bridge was refurbished to its current state. It now provides a useful short cut to the M6.

Bill.S said...

It appears to have been railway-built, to connect Halton to a station on the "Little" North Western Railway. Lancs CC put a weight limit on it in the later 1960s, presumably after it had been wished on them by British Railways after the line closed.