It forms a western bypass to Llanwnda, Dinas, and Bontnewydd before crossing the existing A487 to pass south of Caernarfon Quarry.

It then crosses the River Seiont, passing south of Cibyn Industrial Estate to a junction with the A4086. After crossing the B4366, the route drops steeply to the Plas Menai roundabout.

Works included:

• 8km two plus one carriageway (two lanes one way, one the other, switching along the way between Goat roundabout to Plas Menai roundabout)
• More than 1million m³ of earthworks, including substantial rock cutting carried out by Jones Bros’ in house personnel and equipment
• Construction of 22 structures, including 15 culverts and seven bridges, which included a crossing over Welsh Highland Railway, 300m viaduct over Afon Seiont, 280m viaduct over Afon Gwyrfai and its flood plains, plus four bridges over existing roads under/over the new road

For further info on this, please click here A487 Caernarfon & Bontnewydd Bypass.

Works included:

• The construction of 2.2km of new dual carriageway
• Construction of four new integral bridges, ranging from 15m to 36m spans
• Remedial works to an existing brick arch structure
• Improvements at Poolstock, Chapel Lane, Westwood Way junction, and Westwood Road
• Modifications to traffic signal controls designed in conjunction with Urban Traffic Control (UTC) and above ground traffic signals installed by UTC Transport for Greater Manchester (TfGM)
• Tie in at Westwood Way roundabout and access for a future Flashes visitor centre
• Construction of Westwood Way roundabout with a spur for access to a development site
• Tie in at the existing Warrington Road A49 roundabout

For further info on this, please click here A49 Goose Green to Westwood Park Link Road, Wigan.

Works included:

• 50,000m³ of cut to stockpile, with no material being removed from site
• New infrastructure connections which required close management
• Primary substation and compound for Scottish Power
• 2km of surface water and foul drainage, including two pumping stations and tubosider attenuation
• 1km of access road
• 3km rising main

For further info on this, please click here Cheshire Green Employment Park.

Work included:

• Creation of a new roundabout on the A487 and enlarging an existing one to allow for new access roads to/from future retail and housing developments
• Tarmac surfacing
• Construction of associated footpaths and cycle ways
• Installation of services to new development boundary
• Landscaping to roundabout to tie into PCC ‘gateway project’
• Associated street lighting, signage and safety barriers
• Pre start ecological works to relocate wildlife habitats, including slow worms
• Surface water drainage, attenuation (storage) drainage tank, foul water drains

All of the works constructed on a traffic sensitive section of the A487 entering Haverfordwest town.

Principle Quantities of the Project:

• Surfacing -11,000m²
• Kerbing -3,700 lin/m
• Bulk Excavation – 20,000m³
• Drainage – 1,900lin/m

A site visitor centre was also opened as part of Jones Bros’ pledge to engage with the local community. The visitor centre allowed residents to find out further information about the ongoing roadworks and infrastructure development work under way by Jones BrosWorks were supervised by Pembrokeshire County Council.

For further info on this, please click here Thomas Parry Way, Haverfordwest.

Works to the road bridges involved the upgrading of 2 existing structures and the design and construction of a third new bridge.

Severe weather conditions initially held up the works due to the sheer volumes of rainwater having to be pumped off the road surface. To prevent flooding, 450m attenuation tanks were installed, with hydrosliders used to regulate the release of water to just 2lts per second into the existing watercourse.

Lengthy traffic diversions were removed early after the key bridge works were finished ahead of schedule, with repairs to a former overhead railway bridge completed in just 18 wks – four weeks ahead of schedule.

During the early design stages Value engineering workshops were held to discuss various ideas, including maintaining the existing railway ballast in lieu of excavation and raising the overall road levels, amending the capping and surfacing specification and the drainage layouts. The redundant railway structures were examined for reuse into the project with two of the overbridges being retained. The underbridge was redesigned to allow for the HB loading but this was incorporated into the temporary works.

The overall value engineering saved over £1.5m i.e. 18% of the contract value.

For further info on this, please click here A41 Greatmoor access road.

The Scheme passed through the busy holiday resort of Porthmadog and required extensive planning and the provision of traffic management to ensure minimum disruption to the community.

The route included 7.3m wide single carriageways, 1.0m hard shoulders and 2.5m grass verges, three roundabouts and junctions and eight bridges, including a landmark three-span viaduct over the environmentally sensitive Glaslyn Estuary.

Works included the placing of rock armour and geotextiles within the tidal estuary of the Afon Glaslyn, forming a temporary working platform within the river to assist with bridge construction.

The project was also delivered seven weeks early and below budget.

Major activities included:

• 425,000m³ of earthworks
• Installation of 14.2km of drainage systems
• Surfacing work over 74,000m²
• 18 km of statutory undertakers diversions
• Construction of eight bridges and 22 culverts
• Environmental mitigation work worth £1m

For further info on this, please click here A487 Porthmadog bypass.

The scheme increased the lane widths to current standards, and included the creation of a hardened central reservation, improved drainage and additional communication ducting.

The whole carriageway construction was replaced and finished with thin-coat SMA surfacing course to reduce road noise and improve surface drainage.

Extensive “soft-spots” were found under the existing carriageway, which extended the contract into the period of heavy summer traffic, but careful traffic management allowed two lanes to stay open on both the eastbound and westbound carriageway – preventing serious traffic congestion.

For further info on this, please click here A55 Llanddulas.

Cutting the north face back to a calculated stable angle, with some re-anchoring to the south face, was proposed.

The blasting work was carried out successfully, with 225,000 tonnes of rock and soil being removed from site.

The rock was utilised as recycled aggregate, while the soil helped restore part of the nearby Moel Y Faen quarry.

Once the rock had been removed, the existing carriageway was reconstructed.

It was reopened to the public on schedule.

For further info on this, please click here A5 Ty Nant.