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Contract Notice

Core Valley Lines - Cwmbach Drainage

  • First published: 02 March 2026
  • Last modified: 02 March 2026
  • Version: N/A
  • Record interest

     

  • This file may not be fully accessible.

  •  

Contents

Summary

OCID:
ocds-kuma6s-162261
Published by:
Seilwaith Amey Cymru / Amey Infrastructure Wales Limited
Authority ID:
AA77566
Publication date:
02 March 2026
Deadline date:
30 March 2026
Notice type:
Contract Notice
Has documents:
Yes
Has SPD:
No
Has Carbon Reduction Plan:
No

Abstract

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.

Full notice text

CONTRACT NOTICE – NATIONAL

WORKS

1 Authority Details

1.1

Authority Name and Address


Seilwaith Amey Cymru / Amey Infrastructure Wales Limited

Transport for Wales Infrastructure Hub / Ty Trafnidiaeth, Trefforest Industrial Estate,

Pontypridd


UK

Matt Brown

+44 800521660


http://amey.co.uk
https://www.sell2wales.gov.wales/
https://www.sell2wales.gov.wales/

1.2

Address from which documentation may be obtained


Seilwaith Amey Cymru / Amey Infrastructure Wales Limited

Transport for Wales Infrastructure Hub / Ty Trafnidiaeth, Trefforest Industrial Estate,

Pontypridd


UK


+44 800521660


http://amey.co.uk

1.3

Completed documents must be returned to:


Seilwaith Amey Cymru / Amey Infrastructure Wales Limited

Transport for Wales Infrastructure Hub / Ty Trafnidiaeth, Trefforest Industrial Estate,

Pontypridd


UK


+44 800521660


http://amey.co.uk

2 Contract Details

2.1

Title

Core Valley Lines - Cwmbach Drainage

2.2

Description of the goods or services required

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.

2.3

Notice Coding and Classification

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
1015 Central Valleys (Merthyr Tydfil, Rhondda Cynon Taf)

2.4

Total quantity or scope of tender

Cwmbach is located at VON 20m 78yds, OS Map Reference SO 02285 01322.

The Subcontractor is to carry out the necessary works in accordance with the Detailed Design.

Works for Cwmbach comprise of the following, but not limited to;

Supply and installation of two number inspection chambers on existing culvert's running parallel and in close proximity to one another, and

Excavation of an overflow channel including supply and installation of grille to the outflows culvert's inlet.

AIW seek to procure a Build only Subcontractor under and NEC4 Option A Contract to undertake the drainage works including any temporary works design.

3 Conditions for Participation

3.1

Minimum standards and qualification required

The successful subcontractor will require verified ConstructionLine Gold and RISQS memberships, with works-specific RISQS RICCL coding in place.

4 Administrative Information

4.1

Type of Procedure

Single stage

4.2

Reference number attributed to the notice by the contracting authority

N/a

4.3

Time Limits

Time-limit for receipt of completed tenders
    30-03-2026  Time  17:00

Estimated award date
 04-05-2026

4.5

Language or languages in which tenders or requests to participate can be drawn up

EN 

4.6

Tender Submission Postbox

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

5 Other Information

5.1

Additional Information

(WA Ref:162261)

The buyer considers that this contract is suitable for consortia bidding.

5.2

Additional Documentation

Part 1 Instructions for Tenderers; Cwmbach Drainage R00 (27-02-26)
Part 2 NEC4 Contract Option A; Cwmbach Drainage R00 (27-02-26)
Part 3 Scope; Cwmbach Drainage R00 (27-02-26)
Part 4 Site Information; Cwmbach Drainage R00 (27-02-26)
Part 5 Activity Schedule Template; Cwmbach Drainage R00 (27-02-26)
Part 6 Selection Questionnaire; Cwmbach Drainage R00 (27-02-26)
Appendix 1
Appendix 2
Appendix 3
Appendix 4
Appendix 5

5.3

Publication date of this notice

 02-03-2026

Coding

Commodity categories

ID Title Parent category
45234000 Construction work for railways and cable transport systems Construction work for pipelines, communication and power lines, for highways, roads, airfields and railways; flatwork
45221213 Covered or partially-covered railway excavations Construction work for bridges and tunnels, shafts and subways
45221220 Culverts Construction work for bridges and tunnels, shafts and subways
45232451 Drainage and surface works Ancillary works for pipelines and cables
45232450 Drainage construction works Ancillary works for pipelines and cables
45232452 Drainage works Ancillary works for pipelines and cables
45112000 Excavating and earthmoving work Building demolition and wrecking work and earthmoving work
45112400 Excavating work Excavating and earthmoving work
45111240 Ground-drainage work Demolition, site preparation and clearance work
45234100 Railway construction works Construction work for railways and cable transport systems
44613210 Water chambers Large containers

Delivery locations

ID Description
1015 Central Valleys (Merthyr Tydfil, Rhondda Cynon Taf)

Alert region restrictions

The buyer has restricted the alert for this notice to suppliers based in the following regions.

ID Description
There are no alert restrictions for this notice.

About the buyer

Main contact:
N/a
Admin contact:
N/a
Technical contact:
N/a
Other contact:
N/a

Further information

Date Details
No further information has been uploaded.

Postbox

The awarding buyer has indicated that it will accept electronic responses to this notice via the Tender Submission Postbox facility.

Submit your tender response electronically in a secure environment.

To create an electronic response please click the "Add to my interest list" button at the top of the page.

For more information on the Postbox Facility please refer to the user guide:

Q&A

Ask the buyer any questions you may have relating to this notice. To ask the buyer a question or questions please click the "View Questions and Answers" button.

Additional documents

The following additional documents have been attached to this notice. To obtain these documents please select the individual file names below.

Current documents

There are no documents attached to this document

Replaced documents

There are no previous versions of these documents.


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