Project Details

Description

Resurfacing works are required to maintain the safety and integrity of a section of the A75 to the south of Dunragit, Dumfries and Galloway. A visual condition survey identified lengths of wheel‑track fretting on both sides of the carriageway. Within the scheme extents, there are also several isolated transverse cracks, full‑width machine patches, small longitudinal machine patches, and areas of potholing.

Construction will involve the installation of inlays at varying depths ranging between 30mm – 300mm, covering an area of approximately 15,000m2. The required depths will be determined by the identified defects, with at minimum a 35mm surface course of treatment using binders, and deeper remedial treatments applied where core samples indicate the need. The existing surface will be planed to the required depths and then resurfaced using a paver to restore the material to its original thickness. A hot-applied bitumen sealant will be applied to the joints between the new and existing surfaces at both ends of the scheme.

In addition, minor verge works are included within this scheme to address assets that have been identified as being in poor or very poor condition. The assets include three traffic signs, two bollards, one kerb, and a longitudinal road marking.

The defects regarding traffic signs include faces which will be replaced and the bollards have missing or damaged reflector strips which will be replaced. No full sign or bollard replacement will be undertaken. The kerbs are subject to a build-up of silt and grass which will be resolved by siding out. Outwith siding out, vegetation clearance will not be undertaken. Excavation will also not be undertaken.

Construction activities include:

  • Implementation of Traffic Management (TM);
  • Milling out of existing material by road planer;
  • Loader used to collect and move excess material within work area;
  • Waste material will be removed from site;
  • New materials will be laid including: binder, bituminous asphalt and tack bond, and compressed using a road paver and compacted by a roller;
  • Road joints will be sealed to prevent water ingress using a bitumen sealant;
  • Mechanical sweeper to collect loose material;
  • Road markings and road studs will be applied where necessary likely using thermoplastic;
  • Replacement of sign faces;
  • Replacement of reflector strips;
  • Siding out; and
  • TM removal.

The plant and machinery required will include:

  • Hand tools;
  • Roller wagon;
  • Paver planer; and
  • Mechanical sweeper.

The construction is programmed to be undertaken and completed within the 2026-2027 financial year, proposed for November 2026. The works are expected to take approximately one-week to complete during nighttime hours.

The A75 is expected to remain open during the works. However, it will be subject to a two-way convoy system. Junctions that lead onto the A75 within the scheme extents shall be closed during the works, with vehicles intending to join the A75 being directed to do so at the next available junction.

Location

The works are located on a 1.25km stretch of the A75 carriageway to the south of Dunragit, Dumfries and Galloway. The scheme can be found at the following National Grid Reference (NGRs) Points:

Start: NX 15013 57096

End: NX 13994 57781