Head Office/Registered Office
2411 London Road
Glasgow
G32 8XT

Tel: 0141 764 2411
Fax: 0141 764 2434

 

North Office
Strathpeffer Road
Dingwall
IV15 9XB

Tel: 01349 860000
Fax: 01349 860005

A75 Cairntop 1.jpg whitespacer.jpg A75 Cairntop Aug10.jpg
   
   
Roads and Structures

A75 Cairntop to Barlae

Client
 Transport Scotland
Value
 £6.44M
Engineer
 Mouchel

Designer   

Halcrow Group 
Programme
 52 Weeks
Contract Form
 Design and Build
Completed
 2010

 

 

The project - located at Glen Luce near Newton Stewart - consisted of establishing a 2.3km dual carriageway section on the A75, giving both eastbound and westbound road users dedicated and safe overtaking opportunities. The new eastbound carriageway was built to the north of the existing carriageway, utilising the line of a disused railway. The existing A75 then became the new westbound carriageway. Several drainage/watercourse culverts were constructed as well as a Sustainable Urban Drainage Systems (SUDS) including two retention ponds. Several link roads were constructed, connecting the east and westbound carriageways and an existing bridge across the disused railway was demolished and removed. Protection and diversion works associated with BT, Scottish Water, Premier Transmissions and Scottish Power infrastructure were carried out and provision of road restraint systems, signage and road marking/studs to the new eastbound and modified westbound A75.

 

 

 

Principal Elements included:

Surfacing 21,000m2 / Mammal Underpasses 2 no. /

Mammal Proof Fencing 5,000m / Stock Proof Fencing 5,000m /

Peat Excavation / Bunding 40,000m3

 

 

 

Key Issues:

  • Works successfully completed more than 2 months ahead of schedule
  • Rock blasting adjacent to major gas main servicing Northern Ireland, water pipeline and existing trunk road
  • Working within or close to 3 no. SSSI area
  • Surface water management adjacent to salmon spawning Toll Bar Burn
  • Close liaison with and approvals required by Premier Transmissions, SEPA, SNH, local landowners and tenants
  • Re-use of site won rock for drainage and sub-base materials
  • Re-use of over 60,000m3 of site won Class 1 & 2 material for re-use as fill material within the works