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United Kingdom-Bristol: Road tunnel construction work
Section I: Contracting authority
Section II: Object
A303 Amesbury to Berwick Down
The scheme is an integral part of Highways England'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.
The scheme will be approximately 8 miles (13 km) long and comprises the following key components:
— a northern bypass of Winterbourne Stoke with a viaduct over the River Till valley,
— a new junction between the A303 and A360 to the west of and outside the WHS, replacing the existing Longbarrow roundabout,
— a twin-bore tunnel approximately 2 miles (3,3 km) long through the WHS, and
— a new junction between the A303 and A345 at the existing Countess roundabout.
A303 Amesbury to Berwick Down.
Highways England is looking to work collaboratively with a high performing partner, their supply chain and stakeholders to successfully realise the aims of this challenging and rewarding scheme.
The requirements of the scheme that will be the responsibility of the successful applicant are principally captured in the following areas:
1) Design and construction of the new works
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,
— tunnel boring machine — design, manufacture, testing, shipping and on-site assembly,
— carriageway works,
— 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 and green bridge No 4),
— carriageway and tunnel technology,
— landscaping and habitat creation,
— extension of parsonage down national nature reserve,
— protected species mitigation measures,
— ensure rights of way and private means of access,
— mainline earthworks,
— utilities works.
2) Refurbishment, replacement and modification of existing assets;
There are works required on existing assets under the current ownership of both Highways England and Wiltshire Council. Continued engagement and consultation will be required with both parties throughout the design and construction phases for these elements including:
— existing A303 de-trunking works,
— demolition works and site clearance works,
— modification works to existing structures.
3) Maintenance and operation during construction
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 Highways England, its maintenance contractors and Wiltshire Council to coordinate activities.
4. Post construction maintenance period
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 Highways England, 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.
As set out in the procurement documents.
Option for between 5 and 7 years for extended maintenance and commissioning to enable alignment with regional maintenance contracts.
Section III: Legal, economic, financial and technical information
Section IV: Procedure
Section VI: Complementary information
How to Express Interest in this opportunity:
1) Register for a free account at https://highways.bravosolution.co.uk
2) Click the 'PQQs Open To All Suppliers' link. These are Selection Questionnaires (SQ) open to any registered supplier.
— click on PQQ name to access the content,
— click the 'Express Interest' button at the top of the page. This will move the PQQ into your 'My PQQs' page. This is a secure area reserved for your projects only.
You can now access any attachments by clicking 'Buyer Attachments' in the 'PQQ Details' box.
3) Click 'My Response' under 'PQQ Details', you can choose to 'Create Response' or to 'Decline to Respond' (please give a reason if declining).
You can now use the 'Messages' function to communicate with Highways England and seek any clarification.
Follow the onscreen instructions to complete the questionnaire.
There may be a mixture of online and offline actions for you to perform.
You must then submit your reply using the 'Submit Response' button at the top of the page.
If you require any further assistance please consult the 'Suppliers Help', or contact the Bravo eSourcing help desk.
Expressions of interest must be submitted from the applicants' registered office address.
Each member of a Joint Venture (JV) must submit a letter from their own registered office confirming all company names in the proposed JV.
Applicants can only participate in one JV. Further guidance on JVs is contained in the procurement documents.
This procurement falls within the scope of HM Revenue and Customs' Construction Industry Scheme.
The end date stated at II.2.7 takes into account the maximum 7 year maintenance and commissioning period, this may be reduced to enable alignment with regional maintenance contracts.
Highways England will assess the selection questionnaires to conclude a shortlist of participants for the Dialogue Stage.
Highways England will apply the evaluation criteria to determine the most economically advantageous tender.
Highways England reserves the right not to accept the highest scoring, or any, tender. Tenderers should note that tenders are submitted at their own cost and risk.
Highways England expressly reserves the right:
(i) not to award any contract as a result of this procurement exercise commenced by publication of this notice;
(ii) cancel the competition or part of it for any reason; and
(iii) to make whatever changes it may see fit to the content and structure of the competition.
In no circumstances will Highways England be liable for any costs incurred by any organisation taking part in any stage of the competition.
As applicable and in its sole discretion, Highways England will undertake further financial capacity tests to ensure that applicants have the required financial standing during the Selection Stage and Award Stage. Highways England reserves the right, in its sole discretion, to exclude applicants at any stage.
Further information is provided in the procurement documents.
Highways England will incorporate 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.