Public procurement notice: Contract Award Notice
Published: 2022-10-07
Buyer: National Highways
Country: UK
Contract type: Works
Procedure: Competitive dialogue
CPV classification: 43123000 | 45112500 | 45221000: Engineering works for bridges and tunnels | 45221100: Bridge construction works | 45221111
Estimated value: 1169383706.09 GBP
Award criteria: The most economic tender

Technical requirements: The scheme is an integral part of National Highway's commitment to deliver a high-performing, high-quality route along the A303/A358 corridor between the South West and South East. It will also help to conserve, reconnect and enhance the Stonehenge world heritage site (WHS), making it easier to reach and explore, as well as improving biodiversity and providing a positive legacy for nearby communities.
• a new junction between the A303 and A360 to the west of and outside the WHS, replacing the existing Longbarrow roundabout;
The requirements of the scheme that will be the responsibility of the successful applicant are principally captured in the following areas:
The scheme's new works includes the design and construction of the civil, mechanical, electrical and plumbing (MEP), technology and environmental components, key features of the new works are summarised below:
• Tunnel: A twin-bore tunnel, approximately 2 miles (3.3 kilometers) long beneath the Stonehenge World Heritage Site, including tunnel portals and approach structures, tunnel service buildings and plant rooms, tunnel control system and mechanical, electrical and plumbing systems
• Bridge works to form a viaduct over the River Till, an under bridge for the B3083, a flyover at the A345 Countess Roundabout, and 4 green bridges (Parsonage Down accommodation bridge, Winterbourne Stoke accommodation bridge, A360 Longbarrow Junction & green bridge No. 4)
There are works required on existing assets under the current ownership of both National Highways and Wiltshire Council. Continued engagement and consultation will be required with both parties throughout the design and construction phases for these elements including:
Maintenance and operation of the existing A303 within the site boundary will be required for the duration of the construction works. The appointed Contractor will be required to liaise with National Highways, its maintenance contractors and Wiltshire Council to coordinate activities.
There is an extended maintenance period (minimum of 5 years, maximum of 7 years) after construction to 'prove' the tunnel performs as intended. Maintenance is included as part of this period and the Contractor will be responsible for all elements of the infrastructure associated with the tunnel and its approaches. The appointed Contractor will be required to liaise with National Highways, its maintenance contractors and Wiltshire Council to coordinate activities and tunnel operations.
The appointed Contractor will be required to fulfil the duties of Principal Designer and Principal Contractor under the Construction (Design and Management) Regulations 2015.
Option for between 5 and 7 years for extended maintenance and commissioning to enable alignment with regional maintenance contracts.
The planning application for the A303 Stonehenge is still pending redetermination by the Secretary of State for Transport, following the quashing of the decision to grant the Development Consent Order (DCO). This contract will only become live once the Secretary of State has concluded the planning process and only if this process results in a DCO being granted.
National Highways incorporated a minimum 10 calendar day standstill period at the point information on award of the contract is communicated to tenderers.
Appeals must be lodged in accordance with the Public Contracts Regulations 2015 (SI 2015 No. 102) as amended.


Winner: FCC Construcción, S.A.
Award value: 1169383706.09
Number of bids: 3