Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Relief all the way from Charleston to Blackdog

CONTRACTS

NORWEST HOLST Soil Engineering is well into phase two of ground investigations for Aberdeen's new bypass, the Aberdeen Western Peripheral Route (AWPR).

Information on geology and shallow ground conditions along the 30km route to the west of the city was limited, so extensive investigations were needed.

Phase one provided basic ground information and confirmed the extent of the main investigation. Completed in early May, it comprised 136 cable percussion boreholes, 105 rotary boreholes and 53 trial pits.

Phase two began immediately afterwards.

By mid-June Norwest Holst had put down 119 cable percussion boreholes and 69 rotary boreholes through superficial deposits and into bedrock and dug 111 trial pits.Work is being carried out by eight cable percussion boring rigs, nine rotary drilling rigs and two trial pitting crews.

Several of the exploratory holes are in areas of soft ground, rough terrain and steep sloping ground. The route contains sites of ecological and archaeological importance and areas of potential contamination such as landfill sites and disused railways. Future work will include exploratory holes on existing carriageways, central reservations and verges.

The £2M investigation, funded by the Scottish Executive, Aberdeen City Council and Aberdeenshire Council, was commissioned by the specially formed AWPR Managing Agent responsible for overseeing all aspects of the project on behalf of the funders.

Babtie Group is designing, procuring and supervising the ground investigation.

The AWPR, which will form part of the A90 when it opens in 2010, runs from the A90 in the Charleston area south of Aberdeen, rejoining the A90 near Blackdog to the north of the city. Costing £120M (at 2002 prices), it is hoped the road will relieve congestion and pollution in Aberdeen.

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.