A83 Through Arrochar | Carriageway Improvements
UPDATE (23/03/2026): Due to recent weather delays affecting Phase 1 of the Arrochar works, Phase 2 will now begin on Friday 27 April at 19:00, completing at 06:00 Tuesday 1 May.
UPDATE (12/03/2026): Following an earlier update this week (10.03) which communicated that works on the A83 at Arrochar are paused and the road will remain open as normal until overnight on Sunday 15 March.
Updated (27/02/26): Due to weather, works on Sunday 01 March have been cancelled. Forecast allowing, the programme will commence again on Monday 02 March. As a result, Phase 1 will now complete the morning of Monday 09 March. Phase 2 will now begin the evening of Monday 09 March and complete on the morning of Monday 23 March
UPDATE (16/02/26): Due to delays with another phase of works, phase 1 will now begin on the night of Tuesday 17 February and completes the morning of Tuesday 03 March. Phase 2 will now begin on the night of Tuesday 03 March and will complete on the morning of Tuesday 17 March.
UPDATE (12/02/2026): These works will now begin on Sunday 15 February and are scheduled to be completed on Friday 13 March.
Works to commence on Sunday 15 February 2026 for 20 nights
Temporary traffic lights with convoy for the first half of the village
Road closure with hourly amnesties for the second half of the village
BEAR Scotland, on behalf of Transport Scotland, will carry out overnight carriageway resurfacing works on the A83 trunk road west of Tarbet, through the village of Arrochar.
Set to enhance road safety and surface conditions for road users, these works are planned to start on the night of Sunday 15 February 2026 between the hours of 19:00 and 06:00.
To protect the workforce, this section of the A83 will be subject to appropriate traffic management measures:
Arrochar Phase 1: Temporary traffic lights and a 10mph convoy will be operated overnight from Sunday 15 February until the morning of Thursday 26 March.
Arrochar Phase 2: From Monday 09 March to the morning of Monday 27 April, overnight closures will be in place with amnesties provided to allow road users to pass through the site safely at 8pm, 9pm, 10pm, 11pm, midnight, 1am, 2am, 3am, 4am and 5am.
There will be no works taking place on Friday and Saturday nights.
Traffic management measures will be removed outwith working hours. However, speed restrictions will remain in place during the day as traffic will be running on a temporary surface with no road markings.
Access through the works sites for emergency services will be maintained at all times.
Euan Scott, BEAR Scotland’s North West Representative said: “These works will help restore the condition of the road surface of this section of the A83, greatly improving driving conditions.
“Our teams are committed to executing these works quickly and with safety as our top priority. We thank the local community and road users for their patience while we complete the improvements.
“To minimise delays, we recommend that motorists plan their journeys in advance by consulting the Traffic Scotland website for real-time travel updates.”
How to get the latest travel and traffic information
For full information on roadworks on trunk roads in the north-west and south-east of Scotland, visit the Bear Scotland website.
You can report a defect on the network by filling out this form.
Follow Bear Scotland on X at @bear_scotland and at @SETrunkRoads.