Isle of Barra
Installation of roadside safety barriers
Scottish Water has submitted two planning applications to erect roadside safety barriers on land to the southwest and southeast of their water treatment plant in Northbay.
Agents for Highlands and Islands Airports Ltd. have informed the Comhairle of their plans to apply for a marine licence to carry out coast protection works at Barra Airport. The notification concerns a plan to install rock armour on the runway river at the airport and whether an Environmental Impact Assessment is required. In their screening request, HIAL’s agents explain that the river runs adjacent to one of the airport’s runways. It is turned 90 degrees by a stone and sediment bank to run parallel to a road and then out to sea. Until now, the bank has been maintained by dredging and strengthened using sandbags, cement bags, and loose rock. But the bank suffers from damage and wash out from tidal action.
Comments the screening request document: “The river would naturally flow across the shore over one the airport’s runways and so breaches to the riverbank result in water flowing across the runway and taking it out of service. While there has been some success in building up a riverbank, the current solution results in repeated maintenance, with dredging being required approximately six to eight times per year.” The proposed works are to install 990 square metres of rock armour geotextile along a 300 metre stretch of the riverbank.