Client: Transport Scotland
Value: £17.13M
Engineer: Mouchel
Designer: CH2M Hill
Completed: 2014
The contract was for the design and construction of a bypass of the village of Dunragit (located between Newton Stewart and Stranraer) and altering of the existing A75 carriageway to include for cycle use. The construction of 5.2km of WS2+1 carriageway has given both eastbound and westbound road users dedicated and safe overtaking opportunities through the provision of a third lane. Included in the project were earthworks, road pavement construction, culvert installation, construction of 2 bridges, drainage, watercourse diversion, environmental and landscaping measures, service diversions, road markings and installation of traffic signage.
Key Issues:
• Works located within an area designated as a Scheduled Ancient Monument (SAM) and involved extensive environmental and landscaping mitigation measures
• Works carried out offline with 4 tie-in locations to the existing A75
• Construction of 2 major bridge structures: one over a railway line and one access bridge over the new trunk road
• Drainage outfalling through 5 new SUDS ponds
• Works within close proximity to major gas main servicing Northern Ireland
• Procurement of local resources including materials, plant hire, human resources and sub-contractors, boosting local economy
• Close communication with local landowners and other members of the public
• Nominated for a Saltire Award
Principal Elements included:
Surfacing 104,000m2
Concrete 3,000m3
Cut 77,000m3
Fill 215,000m3
Watercourse diversion 629m
Cement bound granular material 70,000m2
