Summary

OCID:: ocds-kuma6s-157346
Published by:: Seilwaith Amey Cymru / Amey Infrastructure Wales Limited
Authority ID:: AA77566
Publication date:: 24 October 2025
Deadline date:: 21 November 2025
Notice type:: Contract Notice
Has documents:: Yes
Has SPD:: No
Has Carbon Reduction Plan:: No

Abstract

The Caerphilly Tunnel Bore is located at CAR 6m 6ch to 7m 14ch, OS Map Reference ST 17912 84295 (low mileage), ST 17208 85922 (high mileage). Caerphilly Tunnel is running through the Caerphilly Mountain between Caerphilly and Lisvane near Cardiff in South Wales. It is a single bore tunnel located on the CAR (Cardiff – Rhymney) Line, spanning from 6m 6ch to 7m 14ch, with a length of 1784m and a twin track line passing through. Caerphilly tunnel was constructed between the years 1866-71, with 2 tunnel portals and 5 tunnel shafts. Historical records indicate there is a hidden shaft ‘Shaft No.6’ whose existence was confirmed by an investigation. AIW seek to procure a Subcontractor under and NEC4 Option A Subcontract to undertake the brickwork/masonry repair works throughout the extent of the tunnel, and design of water management solutions. The scope for this tender is for the highest priority defects.

Full notice text

CONTRACT NOTICE – NATIONAL

Notice Type: WORKS

1 Authority Details

1.1 Authority Name and Address

Official Name: Seilwaith Amey Cymru / Amey Infrastructure Wales Limited
Postal Address: Transport for Wales Infrastructure Hub / Ty Trafnidiaeth, Trefforest Industrial Estate,
Town: Pontypridd	Postal Code:	Country: UK
For the attention of: Matt Brown	Telephone: +44 800521660
E-Mail:	Fax:
Internet Address (URL): http://amey.co.uk

1.2 Address from which documentation may be obtained

Official Name: Seilwaith Amey Cymru / Amey Infrastructure Wales Limited
Postal Address: Transport for Wales Infrastructure Hub / Ty Trafnidiaeth, Trefforest Industrial Estate,
Town: Pontypridd	Postal Code:	Country: UK
For the attention of:	Telephone: +44 800521660
E-Mail:	Fax:
Internet Address (URL): http://amey.co.uk

1.3 Completed documents must be returned to:

Official Name: Seilwaith Amey Cymru / Amey Infrastructure Wales Limited
Postal Address: Transport for Wales Infrastructure Hub / Ty Trafnidiaeth, Trefforest Industrial Estate,
Town: Pontypridd	Postal Code:	Country: UK
For the attention of:	Telephone: +44 800521660
E-Mail:	Fax:
Internet Address (URL): http://amey.co.uk

2 Contract Details

2.1 Title

Core Valley Lines - IM Renewals; Caerphilly Tunnel Bore

2.2 Description of the goods or services required

The Caerphilly Tunnel Bore is located at CAR 6m 6ch to 7m 14ch, OS Map Reference ST 17912 84295 (low mileage), ST 17208 85922 (high mileage).

Caerphilly Tunnel is running through the Caerphilly Mountain between Caerphilly and Lisvane near Cardiff in South Wales. It is a single bore tunnel located on the CAR (Cardiff – Rhymney) Line, spanning from 6m 6ch to 7m 14ch, with a length of 1784m and a twin track line passing through.

Caerphilly tunnel was constructed between the years 1866-71, with 2 tunnel portals and 5 tunnel shafts. Historical records indicate there is a hidden shaft ‘Shaft No.6’ whose existence was confirmed by an investigation.

AIW seek to procure a Subcontractor under and NEC4 Option A Subcontract to undertake the brickwork/masonry repair works throughout the extent of the tunnel, and design of water management solutions. The scope for this tender is for the highest priority defects.

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=157346.

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

a) Commodity Codes

	Code		Description
	45221000		Construction work for bridges and tunnels, shafts and subways
	45221200		Construction work for tunnels, shafts and subways
	45221240		Construction work for tunnels
	45221242		Railway tunnel construction work
	45221248		Tunnel linings construction work
	45234100		Railway construction works
	45261420		Waterproofing work
	45262500		Masonry and bricklaying work
	45262522		Masonry work

b) Delivery Location/Area

	Code		Location
	1016		Gwent Valleys (Torfaen, Blaenau Gwent, Caerphilly)

2.4 Total quantity or scope of tender

3 Conditions for Participation

3.1 Minimum standards and qualification required

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
21-11-2025 Time 17:00

Estimated award date
30-01-2026

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

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

Successful subcontractor will require verified ConstructionLine Gold and RISQS memberships, with associated RISQS RICCL codes in place (see listed in Part 1 document under '3. The Procurement Process').

(WA Ref:157346)

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

5.2 Additional Documentation

The following additional documents relating to this notice are available from the site:

Part 1 Instructions for Tenderers; Caerphilly Tunnel Bore

Part 2 NEC4 Contract Option A; Caerphilly Tunnel Bore

Part 3 Scope; Caerphilly Tunnel Bore

Part 4 Site Information; Caerphilly Tunnel Bore

Part 5 Activity Schedule Template; Caerphilly Tunnel Bore

Part 6 Selection Questionnaire; Caerphilly Tunnel Bore

Appendix 1

Appendix 2

Appendix 3

Appendix 4

Appendix 5

Appendix 6

Appendix 7

Appendix 8

Appendix 9

5.3 Publication date of this notice

24-10-2025

SF 51a

Coding

Commodity categories

ID	Title	Parent category
45221000	Construction work for bridges and tunnels, shafts and subways	Engineering works and construction works
45221240	Construction work for tunnels	Construction work for bridges and tunnels, shafts and subways
45221200	Construction work for tunnels, shafts and subways	Construction work for bridges and tunnels, shafts and subways
45262500	Masonry and bricklaying work	Special trade construction works other than roof works
45262522	Masonry work	Special trade construction works other than roof works
45234100	Railway construction works	Construction work for railways and cable transport systems
45221242	Railway tunnel construction work	Construction work for bridges and tunnels, shafts and subways
45221248	Tunnel linings construction work	Construction work for bridges and tunnels, shafts and subways
45261420	Waterproofing work	Erection and related works of roof frames and coverings

Delivery locations

ID	Description
1016	Gwent Valleys (Torfaen, Blaenau Gwent, Caerphilly)

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:

Postbox – for Buyers and Suppliers

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.

Core Valley Lines - IM Renewals; Caerphilly Tunnel Bore

Contents

Summary

Abstract

Full notice text

CONTRACT NOTICE – NATIONAL

1 Authority Details

1.1

Authority Name and Address

1.2

Address from which documentation may be obtained

1.3

Completed documents must be returned to:

2 Contract Details

2.1

Title

2.2

Description of the goods or services required

2.3

Notice Coding and Classification

2.4

Total quantity or scope of tender

3 Conditions for Participation

3.1

Minimum standards and qualification required

4 Administrative Information

4.1

Type of Procedure

4.2

Reference number attributed to the notice by the contracting authority

4.3

Time Limits

4.5

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

4.6

Tender Submission Postbox