Site Updates

August 2018:

Design Manual for Roads and Bridges

CD 375 Design of Corrugated Steel Buried Structures replaces BD12/01 in Volume 2.Section 2.Part 6
CD 526 Spacing of Road Gullies replaces HA 102/12 in Volume 4.Section 2. Part 3


For more information about pilots and trials on the Highways Agency network or the Guide itself please contact:

Max Brown (

Telephone: ++44 (0) 1173 728541

Highways Agency
Safety, Standards and Research Directorate
Temple Quay House
2 The Square
Temple Quay