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Tunnelling under A77 and river in East Ayrshire

Scottish Water has tunnelled under a major road in East Ayrshire to avoid traffic disruption, and beneath a river to reduce the impact on the aquatic environment, as a project to improve services to more than 200,000 people progresses.

Caledonia Water Alliance (CWA), Scottish Water’s alliance partner, used state-of-the-art Tunnel Boring Machines (TBM) to install a section of a major new water main under the A77 near Kilmarnock and to lay another stretch of the pipe beneath the River Irvine near Hurlford.

A 67 metre-long steel pipe, and a 60 metre-long concrete tunnel (with a 1.2m diameter) to house it, were installed under the road about three miles south of the Bellfield roundabout.

The tunnelling work, which started in mid-October and took five weeks to complete, was done without requiring any road closure or lane closure and so no disruption to traffic occurred.

Scottish Water has tunnelled under a major road in East Ayrshire to avoid traffic disruption, and beneath a river to reduce the impact on the aquatic environment, as a project to improve services to more than 200,000 people progresses.