A29 Ring Road, Coleraine

Overview

Patrick Bradley Ltd were awarded this scheme by Transport NI in August 2014. The objective of the scheme was to upgrade the existing A29 Ring Road carriageway to 4 lanes from the Lodge Road Roundabout to Ballycastle Road Roundabout, within an agreed programme of 14 weeks. The works within the scheme included kerbing, drainage, resurfacing and civil engineering works for traffic signals at two junctions and minor services alterations and ancillary works.

Initial Stage

Site clearance involved the felling of 200 nr trees and removal off site. Silt fencing was erected around the perimeter of all open water courses and a traffic management system set up by our sub-contractor (Highway Barrier Solutions). A temporary speed limit was set up on the scheme reducing the carriageway from 50mph to 40mph and a full time traffic management operative was on site at all times to maintain and record all aspects.

Scope Of Works

Works included a complete new drainage system of approx. 2700m of uPVC pipes ranging from 100mm to 600mm in diameter. Existing kerb lines in the region of 2,500m were excavated and replaced as well as 1300m of new edge kerbs laid to the back of the footway. The footways were finished in Hot Rolled Asphalt and laid with our small Vogele spreader.

Removal of the existing concrete kerbs was carried out by scarifying them with our 1m wide planer to a depth of 250mm. This allowed us to install the new kerbs into position without any further excavation and generated recycled fill which we were able to re-use into footways and verges. Being able to re-use this material onsite resulted in a saving of approximately 750t of imported material.

Gradients of the existing carriageway were altered from camber to cross-fall, which involved 14,000m2 of scarifying and 1,000 tonne of asphalt regulating material laid. Failed areas of carriageway were planed out to a depth of 220mm and replaced with 28mm heavy-duty macadam road base.
12,000 m2 of heavy duty macadam binder course was then laid to a depth of 60mm and 20,000m2 of Hot Rolled Asphalt surface course laid to a depth of 45mm.

All scarifying and re-surfacing works were carried out overnight to minimize disruption to the general public and also the supermarket giant ASDA who are situated within the site.

Traffic Light System

A new traffic light system to both the ASDA shopping centre and Newmills Road junctions were installed which entailed a close working relationship between Siemens & Traffic Section. Here there was over 30no new traffic signal poles/heads erected, 60no access chambers installed and over 2500m of traffic ducting laid in both footways & carriageways.

Installation of NIE, Street Lighting, Traffic ducts, drainage pipe crossings on the A29 Ring Road were carried out at night after 10pm (ASDA Closing Hours) with all crossings surfaced with hot bitmac before opening to traffic the next morning in each case.

Safety Barrier Fence

A safety barrier fence was erected along the front of the ASDA store as-well as repairs throughout the site. In doing so, an existing water main & street lighting duct had to be relocated to allow the installation of the new barrier system.

Management & Completion

Weekly site meetings were held onsite between all interested parties to discuss all aspects of the scheme. The agenda consisted of Health & Safety issues, Programme, Technical details, Traffic Management, Finance and Contract Compliance.

The local PSNI traffic branch were represented at the site meetings and gave positive feedback on the traffic management system throughout the scheme.
To keep all adjacent businesses and residents informed of our programme, we had constant contact with the managers of both ASDA stores & The Lodge Hotel as-well as carrying out numerous letter drops to the nearby housing estates.
To complete the works programme, new signage was erected across the scheme and 3no. road marking crews were needed on site to work closely with Traffic Section, in order to complete a complex changeover over in lanes involving the Lodge Road Roundabout.

The scheme was completed on time and has been well received from local residents, the Local Council and from the client.

portglenone-marina4giants-causeway1