Severn Bridge and Aust Viaduct First Severn Crossing

Overview

Heritage Category: Listed Building

Grade: I

List Entry Number: 1119760

Date first listed: 29-May-1998

Statutory Address: SEVERN BRIDGE AND AUST VIADUCT FIRST SEVERN CROSSING, M48 MOTORWAY

Map

Ordnance survey map of Severn Bridge and Aust Viaduct First Severn Crossing
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Location

Statutory Address: SEVERN BRIDGE AND AUST VIADUCT FIRST SEVERN CROSSING, M48 MOTORWAY

The building or site itself may lie within the boundary of more than one authority.

District: South Gloucestershire (Unitary Authority)

Parish: Aust

County: Gloucestershire

District: Forest of Dean (District Authority)

Parish: Tidenham

National Grid Reference: ST5590090230

Summary

Legacy Record - This information may be included in the List Entry Details.

Reasons for Designation

Legacy Record - This information may be included in the List Entry Details.

History

Legacy Record - This information may be included in the List Entry Details.

Details

AUST

ST58NE

297-0/7/10005

M48 MOTORWAY

Severn Bridge and Aust Viaduct First Severn Crossing

I

Includes: Severn Bridge and Aust Viaduct, First Severn Crossing, M48 Motorway Beachley, Tidenham.

Motorway bridge over River Severn and its eastern approach viaduct. 1961-1966. Freeman Fox and Partners in association with Mott, Hay and Anderson, consulting architect Sir Percy Thomas. Bridge has steel cables, deck and towers, concrete substructure and foundation (cable anchorages and piers for towers); viaduct structure steel with concrete deck slab. Suspension bridge (spans 305m - 987.5m - 305m) with aerodynamically shaped deck and inclined hangers; first bridge in the world to be built with these features. Viaduct 156.5m long, has three spans consisting of two box girders acting compositely with concrete slab. Part of the First Severn Crossing for the M48 (formerly M4), consisting of Aust Viaduct, Severn Bridge and Wye Viaduct (qv). Strengthened and refurbished 1985-91 without seriously changing appearance. Bridge recently repainted white to reduce thermal stress (not original colour, but successful).

This is the first bridge in the world to use the revolutionary concept of the streamlined deck and inclined hangers, and was an early example of a fully welded steel deck. It was by far the longest span in England when it was built.

This entry was subject to a Minor Amendment on 5 September 2017.

The asset was previously listed twice also under the parish of Tidenham, Forest of Dean at List entry 1379827. This entry was removed from the List on 5 September 2017.

Legacy

The contents of this record have been generated from a legacy data system.

Legacy System number: 469289

Legacy System: LBS

Sources

Books and journals
Brown, D J , Bridges 1965 To 1993, (1993)
Henry, D, Jerome, J A, Modern British Bridges, (1965)
Flint, AR, 'Strengthening and Refurbishment of the Severn Crossing' in Proceedings of the Institution of Civil Engineers - Structures and Buildings, , Vol. 94, Issue 1, (1992), .
Roberts, G, 'Severn Bridge Design and Contract Arrangements' in Proceedings of the Institute of Civil Engineering, , Vol. 41, Issue 1, (1968), .

End of official listing