Welcome to the MCHW

The Manual of Contract Documents for Highway Works (MCHW) is our standard suite of specification documents which are included within a construction contract and the Contractor is required to comply with its contents.

Scroll further down the page for filters based on volume, or click here for archived copies of MCHW standards.

MCHW volume filters

Volume 1 Specification for Highway Works

Volume 1 contains the requirements and approvals procedures for work, goods or materials used in the construction, improvement or maintenance of the Trunk Road network.

Volume 3 Highway Construction Details

Volume 3 contains drawings to be used in the preparation of contracts for the construction, improvement and maintenance of the Trunk Road network.

Volume 5 Contract Documents for Specialist Activities

Volume 5 contains contracts for specialist activities such as geodetic surveys, ground investigation, mechanical and electrical installations in road tunnels, movable bridges and bridge access gantries, as well as trenchless installation of highway drainage and service ducts.