Project Details
Description
Resurfacing works are required to maintain the safety and integrity of the northbound (NB) section of the A78 between Irvine and Troon, in North Ayrshire, covering a total area of 2 hectares (ha). The works are required due to a range of existing structural defects on the carriageway, including rutting, alligator cracking and longitudinal cracking.
Construction activities and the associated plant and machinery required are as follows:
- Implementation of Traffic Management (TM) and marking out site (TM plant);
- Removal of existing surfacing and milling to agreed depths (planer, wagon, lorries);
- Resurfacing to the existing road levels using TS2010 aggregate, AC binder, AC base (paver, roller);
- Reinstatement of road markings, linings, and studs (lorries/wagons and plant); and,
- Removal of TM.
In addition to structural inlays, drainage channel and gully clearing will be undertaken as well as kerbing clearing on the roundabout and traffic sign upgrades.
The proposed construction is programmed to be undertaken and completed within the 2026-2027 financial year during nighttime hours over a period of approximately nine nightshifts.
Traffic Management will consist of overnight full closures with a diversion route for mainline works utilising Meadowhead Avenue. Works occurring around the roundabout will require two-way traffic lights.
Location
This resurfacing scheme is being undertaken along the A78 NB carriageway, between Irvine and Troon, in North Ayrshire. The scheme extents are identified by the following National Grid References (NGRs) (Figure 1):
- Scheme Start - NS 33588 34603
- Scheme End - NS 33168 35939