Welcome to the National Roads Authority Standards website.

This website contains information relating to the design, construction and maintenance of national roads.

For Standards related queries, please contact:

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For Departures related queries and to submit NRA TA 85 Preliminary Design Reports, please contact:

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The navigation links provide access to the following:

The NRA Design Manual for Roads and Bridges (NRADMRB).

The Alphanumeric Index is contained in Volume 0 of the NRA DMRB.  The latest amendments to the NRA DMRB are referenced on the front page of the Alphanumeric Index.

The NRA Manual of Contract Documents for Roadworks (NRA MCDRW).

For a brief description of the latest amendments to the NRA MCDRW see the Recent Changes quick link on left hand side of the standards homepage.

NRA Interim Advice Notes

NRA Interim Advice Notes are issued by the NRA from time to time. They shall be used as directed by the NRA for specific road projects. They are standards under development and shall be used in conjunction with the NRA DMRB and NRA MCDRW and may incorporate amendments to documents in these manuals.

Departure Applications Website

The procedure for applying for a Departure from NRA standards or specifications is outlined in Volume 0 of NRA DMRB.

To register to use the departures facility please e-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Other NRA publications

Click here to access other road contsruction documentation on the NRA website.