Client: The Highland Council
Value: £5.68M
Engineer: AECOM
Completion: 2012
The contract – carried out under NEC 3 Option A conditions – was for the construction of a 1,570m flood relief channel to the South West of Inverness. The channel consisted of a reinforced concrete box culvert, a lined channel and 7 no. headwalls incorporating flow control structures at Locahardil Burn, Slackbuie Channel, Slackbuie Springs and Ault na Skiah Burn. The project also included bulk earthworks, with 60,000 tonnes of unsuitable material taken offsite, and involved construction adjacent to, and under, public roads and services and adjacent to housing estates.
Key Issues:
• Working in close proximity to residential developments requiring close liaison with home and land owners
• Extensive traffic management including the management of road crossings
• Pedestrian access maintained at north end of the works
• Deep excavations, including some in poor ground conditions
• Extensive service/public utility works, including a high pressure water main diversion and several service crossings
• Working in and alongside existing watercourses including ecological and archaeological constraints
Principal Elements included:
Concrete 1,000m3
Lined Drainage Channel 700m
Earthworks 60,000T
Box Culvert 870m
Headwall Structures 7 no.
