--- title: "Core Valley Lines - Cwmbach Drainage" ocid: "ocds-kuma6s-162261" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-kuma6s-162261" markdown_url: "https://d3tenders.com/contract/ocds-kuma6s-162261.md" json_url: "https://d3tenders.com/contract/ocds-kuma6s-162261.json" source: "Sell2Wales" current_stage: "Tender" buyer: "SEILWAITH AMEY CYMRU / AMEY INFRASTRUCTURE WALES LIMITED" published: "2026-03-02" --- # Core Valley Lines - Cwmbach Drainage Buyer: SEILWAITH AMEY CYMRU / AMEY INFRASTRUCTURE WALES LIMITED Current stage: Tender OCID: ocds-kuma6s-162261 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-kuma6s-162261) [Download OCDS JSON](https://d3tenders.com/contract/ocds-kuma6s-162261.json) ## Summary Seilwaith Amey Cymru / Amey Infrastructure Wales Limited is initiating a public procurement process for the 'Core Valley Lines - Cwmbach Drainage' project, under Transport for Wales. Located in South Wales, this tender falls within the construction industry, particularly targeting drainage works. The procurement method is open, with submissions accepted electronically. The tender stage is ongoing, with a deadline for submissions on 30 March 2026. It's designed to repair and renew core elements of the Core Valley Lines network as part of ongoing maintenance efforts authorised by the Welsh Government. This tender presents substantial business growth opportunities, especially for companies specialised in railway construction and drainage works. Businesses equipped with ConstructionLine Gold and verified RISQS memberships, with applicable RISQS RICCL coding, are best suited to apply. The contract supports consortia bidding, making it ideal for both single entities and collaborative groups looking to expand their influence in infrastructure projects. Engagement in this project can significantly enhance a firm's portfolio in public sector works while fostering strategic partnerships within the construction industry in Wales. ## Notice AIW seeks to engage a Subcontractor to undertake the required works in South Wales, based on the NEC4 Engineering Construction Subcontract.AIW is responsible for the operation and maintenance of the Core Valley Lines (CVL) network on behalf of Transport for Wales (TfW) acting on behalf of the Welsh Government.As part of the AIW responsibility to maintain this network, there is a requirement as agreed by TfW to repair and renew elements of the network. The works at Cwmbach is a renewal item required.NOTE: To register your interest in this notice and obtain any additional information please visit the Sell2Wales Web Site at https://www.sell2wales.gov.wales/Search/Search_Switch.aspx?ID=162261.The buyer has indicated that it will accept electronic responses to this notice via the Postbox facility. A user guide is available at https://www.sell2wales.gov.wales/sitehelp/help_guides.aspx.Suppliers are advised to allow adequate time for uploading documents and to dispatch the electronic response well in advance of the closing time to avoid any last minute problems. (WA Ref:162261)The buyer considers that this contract is suitable for consortia bidding. ## Key Details | Field | Value | | --- | --- | | Publication source | Sell2Wales | | Latest notice | https://www.sell2wales.gov.wales/search/search_switch.aspx?ID=162261 | | Notice type | S2W Notice - Website Invitation to Tender Notice | | Procurement type | Standard | | Procurement category | Works | | Procurement method | Open | | Procurement method details | Not specified | | Tender suitability | Not specified | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 2 Mar 2026 | | Submission deadline | 30 Mar 2026 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | Not specified | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | Not specified | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Not specified | | Lots status | Not specified | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | SEILWAITH AMEY CYMRU / AMEY INFRASTRUCTURE WALES LIMITED | | Locality | PONTYPRIDD | | Post town | Not specified | | Postcode | N/A | | Country | Not specified | | ITL 1 | Not specified | | ITL 2 | Not specified | | ITL 3 | Not specified | | Local authority | Not specified | | Electoral ward | Not specified | | Westminster constituency | Not specified | | Delivery location | Not specified | ## CPV Codes ### Divisions - 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus) - 45 - Construction work ### Codes - 44613210 - Water chambers - 45111240 - Ground-drainage work - 45112000 - Excavating and earthmoving work - 45112400 - Excavating work - 45221213 - Covered or partially-covered railway excavations - 45221220 - Culverts - 45232450 - Drainage construction works - 45232451 - Drainage and surface works - 45232452 - Drainage works - 45234000 - Construction work for railways and cable transport systems - 45234100 - Railway construction works ## Release History - 2 Mar 2026 at 13:49 - Tender - S2W Notice - Website Invitation to Tender Notice - https://www.sell2wales.gov.wales/search/search_switch.aspx?ID=162261 ## Notice URLs - http://amey.co.uk - https://www.sell2wales.gov.wales/ - https://www.sell2wales.gov.wales/Search/Search_Switch.aspx?ID=162261.The - https://www.sell2wales.gov.wales/sitehelp/help_guides.aspx.Suppliers ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-kuma6s-162261. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-kuma6s-162261.json.