Project details
Description
Resurfacing works are required to maintain the safety and integrity of a section of the A75, from the Allanton Roundabout to the A713 junction, outside of Castle Douglas, Dumfries and Galloway. The works are required as the carriageway is currently displaying various structural defects including fretting/potholes, and longitudinal, transverse, and alligator cracking.
The scheme is approximately 1.5km in length, with an area of approximately 1.9 hectares.
The construction activities will involve the installation of structural inlays with depths ranging from approximately 30mm-300mm, using TS2010 surface course material.
Key construction activities and essential plant and machinery required for the resurfacing process will include the following:
- Installation of Traffic Management (TM);
- Removal of the existing road surface to the required depths by planer;
- Compaction and flattening of the material by roller wagon;
- Laying of the new road surface by paver for structural inlays, with depths ranging between 30mm to 300mm;
- Sealing of road joints to prevent water ingress;
- Transporting of the removed road material by disposal trucks;
- Installation of new road markings and new road studs; and
- Removal of TM upon scheme completion.
The proposed construction is programmed to be undertaken and completed within 2025-2026 financial year for approximately six nightshifts.
TM will consist of six overnight closures with traffic to be diverted through Castle Douglas at Allanton Roundabout, rejoining the A75 at Hightae Roundabout.
Location
The scheme is located along the A75, north of Castle Douglas in Dumfries and Galloway. The scheme extents (Figure. 1) can be found at the following National Grid References (NGRs):
- Start - NX 77194 64214
- End - NX 76058 63277