---
title: "T0695 Diverging Diamond Interchanges - update to DMRB standard CD 122"
ocid: "ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "NATIONAL HIGHWAYS"
published: "2025-06-26"
---

# T0695 Diverging Diamond Interchanges - update to DMRB standard CD 122

Buyer: NATIONAL HIGHWAYS  
Current stage: Award  
OCID: ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e.json)

## Summary

The procurement process led by National Highways involves a contract titled "T0695 Diverging Diamond Interchanges - update to DMRB standard CD 122". This project falls under the industry category of Surface Water Pollution Rehabilitation Services and will provide research services for Diverging Diamond Interchanges (DDIs). This tender process is at the award stage as of 26th June 2025, with key stages covering a time frame from the start of the contract on 25th June 2025 to its completion on 31st March 2026. The procurement method is selective, executed through a call-off from a framework agreement, and the services are intended for delivery across the United Kingdom and other specified international regions.

This tender presents significant opportunities for business growth, particularly for companies specialising in engineering analysis, infrastructure design, and environmental assessments. The contract, valued at £94,496.76, offers a chance for small and medium-sized enterprises (SMEs) to engage in impactful research that could lead to improvements in road safety and environmental sustainability. Businesses equipped to manage complex infrastructure projects and contribute to updating national standards would find this opportunity well-suited to their capabilities. WSP UK Limited, a large supplier, has already been awarded the contract, highlighting the scale and potential impact of the project.

## Notice

National Highways (the Client) is seeking the provision of services to undertake research into Diverging Diamond Interchanges (DDI). STAGE 1 SCOPE: Overall, the aims of this task are to: 1. Measure the safety performance of DDIs to clearly understand how or if they are safer than existing junction types; 2. Examine potential risks and hazards such as Wrong Way Driving; 3. Review international standards and determine relevance to UK; and 4. Review the DMRB to understand how requirements and advice would need to change to encompass Diverging Diamond Interchanges. The award of this work package is initially for Stage 1 only (see background). Subject to further funding, a STAGE 2 FEASIBILITY task would be undertaken in the next financial year: - Identify a location where the layout can be retrofitted and modelled to existing infrastructure such as at an existing dumbbell roundabout at a grade separated junction and then examine scalability across the network; - Investigate how any new risks such as Wrong Way Driving or failure of traffic signals can be reduced or removed; - Measure the environmental and economic benefits such as land take reduction and carbon saving; and - Provide recommendations for requirements, advice and drawings to update the DMRB and update the standards CD 122 and CD 123. This is anticipated to be a report and not an update to the standards in case the findings do not support changing the DMRB.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/c72b3a73-f799-4e4e-a9be-322bee88c1ac |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Call-off from a framework agreement |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 26 Jun 2025 |
| Submission deadline | 18 Jun 2025 |
| Future notice date | Not specified |
| Award date | 24 Jun 2025 |
| Contract period | 24 Jun 2025 - 31 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £94,496 |
| Lots value | Not specified |
| Awards value | £94,496 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Not specified |
| Awards status | Active |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | NATIONAL HIGHWAYS |
| Locality | BIRMINGHAM |
| Post town | Birmingham |
| Postcode | B1 1RN |
| Country | England |
| ITL 1 | TLG West Midlands (England) |
| ITL 2 | TLG3 West Midlands |
| ITL 3 | TLG31 Birmingham |
| Local authority | Birmingham |
| Electoral ward | Ladywood |
| Westminster constituency | Birmingham Ladywood |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | WSP |

## CPV Codes

### Divisions

- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 90733200 - Surface water pollution rehabilitation services

## Release History

- 26 Jun 2025 at 10:51 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/c72b3a73-f799-4e4e-a9be-322bee88c1ac

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/c72b3a73-f799-4e4e-a9be-322bee88c1ac
  26th June 2025 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/50178f8e-31d8-4bff-a389-77fa15d164f7
  n/a

## 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-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e.json.