Notice Information
Notice Title
A483 Llandeilo and Ffairfach Bypass Project
Notice Description
This procurement relates to the award of a contract for the design development of the A483 Llandeilo and Ffairfach bypass project, and the provision of assistance with relevant statutory procedures. Subject to the outcome of the statutory procedures and the performance of the Contractor, the contract provides for the Contractor to be appointed to undertake detailed design and construction of the works. This Tender Notice signifies the start of the procurement exercise and uses the Competitive Flexible Procedure (CFP) under the Procurement Act 2023.
Lot Information
Lot 1
Renewal: The Welsh Government reserves the right to modify the Contracts awarded during their term in accordance with Section 74 and Schedule 8 of the Procurement Act 2023, including where changes arise through the NEC4 compensation event process or the materialisation of known risks identified in the tender documentation.
Planning Information
The engagement will consist of two parts: Firstly, an in-person event on Monday 27th October at the Parkgate Hotel Westgate St, Cardiff CF10 1DA at 10:30am. The purpose of the event is not to inform the design of the delivery and contracting models, or the WG’s procurement strategy per se; rather it is to give potential bidders an overview of the project. The event is open to potential bidders, if you wish to register your attendance, please email A483LlandeiloandFfairfach@arcadis.com To attend the event in person pre-registration is required, with a maximum number of 2 attendees per organisation. Upon registering your attendance, you will receive a copy of an invitation to complete a questionnaire to inform the design of the delivery and contracting models, and the Welsh Government’s procurement strategy. This questionnaire invites potential bidders to provide their views on a range of issues, including, procurement strategy, climate change, key commercial terms, project scope and potential barriers to bidding. If you are unable to attend the event and wish to share your views via our questionnaire please request a copy of the questionnaire via our mailbox A483LlandeiloandFfairfach@arcadis.com Potential bidders are requested to return their completed questionnaires by 12:00pm (midday) Monday 10th November 2025 to the following address: A483LlandeiloandFfairfach@arcadis.com
Notice Details
Publication & Lifecycle
- Open Contracting ID
- ocds-h6vhtk-051dac
- Publication Source
- Find A Tender Service
- Latest Notice
- https://www.find-tender.service.gov.uk/Notice/079893-2026
- Current Stage
- Tender
- All Stages
- Planning, Tender
Procurement Classification
- Notice Type
- UK4 - Tender Notice
- Procurement Type
- Standard
- Procurement Category
- Works
- Procurement Method
- Selective
- Procurement Method Details
- Competitive flexible procedure
- Tender Suitability
- SME, VCSE
- Awardee Scale
- Not specified
Common Procurement Vocabulary (CPV)
- CPV Divisions
-
- CPV Codes
45000000 - Construction work
Notice Value(s)
- Tender Value
- £80,000,000 £10M-£100M
- Lots Value
- £80,000,000 £10M-£100M
- Awards Value
- Not specified
- Contracts Value
- Not specified
Notice Dates
- Publication Date
- 21 Aug 20264 days ago
- Submission Deadline
- 17 Sep 20264 weeks to go
- Future Notice Date
- 18 Aug 2026Expired
- Award Date
- Not specified
- Contract Period
- 1 Apr 2027 - 1 Dec 2037 Over 5 years
- Recurrence
- Not specified
Notice Status
- Tender Status
- Active
- Lots Status
- Active
- Awards Status
- Not Specified
- Contracts Status
- Not Specified
Buyer & Supplier
Contracting Authority (Buyer)
- Main Buyer
- Llywodraeth Cymru / Welsh Government
- Contact Name
- Available with D3 Tenders Premium →
- Contact Email
- Available with D3 Tenders Premium →
- Contact Phone
- Available with D3 Tenders Premium →
Buyer Location
- Locality
- CARDIFF
- Postcode
- CF10 3NQ
- Postcode Area
- Cardiff
- Country
- Wales
-
- Major Region (ITL 1)
- TLL Wales
- Basic Region (ITL 2)
- TLL5 South East Wales
- Small Region (ITL 3)
- TLL52 Cardiff and Vale of Glamorgan
- Delivery Location
- TLL14 South West Wales
-
- Local Authority
- Cardiff
- Electoral Ward
- Cathays
- Westminster Constituency
- Cardiff South and Penarth
Further Information
Notice Documents
-
https://www.find-tender.service.gov.uk/Notice/079893-2026
21st August 2026 - Tender notice on Find a Tender -
https://www.find-tender.service.gov.uk/Notice/073320-2026
3rd August 2026 - Preliminary market engagement notice on Find a Tender -
https://www.find-tender.service.gov.uk/Notice/064836-2025
13th October 2025 - Preliminary market engagement notice on Find a Tender -
https://www.find-tender.service.gov.uk/Notice/024813-2025
22nd May 2025 - Pipeline notice on Find a Tender -
https://www.delta-esourcing.com/respond/9XDC94DQAC
Bidders will need to click on the 'Register Interest' button on the Delta Portal and then login where you will be taken directly to the opportunity response where the documentation can be found. The opportunity on the Portal is being managed by Mott MacDonald.
Open Contracting Data Standard (OCDS)
The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.