Scope
Reference
HE0915 M4 Junction 17 Improvement Works
Description
Wiltshire Council are procuring a contract for the delivery of the M4 Junction 17 improvement works, with a view to awarding the contract in early spring 2026.
Scope of Works
The proposed scheme includes:
• Installation of traffic signals on all roundabout approaches
• Carriageway widening throughout the junction
• Increasing the number of traffic lanes across the motorway bridges from two to three
• Widening of the circulatory carriageway
The successful contractor must be capable of working on the National Highways network and experienced in delivering complex highway infrastructure improvements.
Delivery Phases (estimated)
The contract will be delivered in two phases:
• Phase 1 - Early Contractor Involvement (ECI): Spring 2026 - Autumn 2026
• Phase 2 - Construction: 2027 (subject to approval of the Full Business Case by the Department for Transport)
Estimated Value • £27 million (including VAT)
Total value (estimated)
- £21,600,000 excluding VAT
- £27,000,000 including VAT
Above the relevant threshold
Contract dates (estimated)
- 6 April 2026 to 29 September 2028
- 2 years, 5 months, 24 days
Main procurement category
Works
CPV classifications
- 45233100 - Construction work for highways, roads
- 45233110 - Motorway construction works
Contract locations
- UKK15 - Wiltshire CC
Participation
Legal and financial capacity conditions of participation
Please refer to the tender documentation
Technical ability conditions of participation
Please refer to the tender documentation
Particular suitability
Small and medium-sized enterprises (SME)
Submission
Enquiry deadline
5 December 2025, 12:00pm
Tender submission deadline
19 December 2025, 12:00pm
Submission address and any special instructions
https://procontract.due-north.com//Opportunities
How to Submit a Tender on the e-Procurement System
Tender documents submitted must be in accordance with the given templates.
Please note that assistance on the e-procurement system is available via the help and
guidance within the site. Supplier guidance documents are also available to view and
download.
All documents required to submit a tender are available on the e-procurement system.
All tenders must be submitted via the e-procurement system prior to the deadline in this ITT.
Please allow sufficient time to upload documentation as late submissions will not be
accepted. Insufficient time allowed for upload will not be considered a justification for
extension by the Council.
If Tenderers experience technical difficulties relating to the e-procurement system they
should use the 'Help' button on the top menu bar on the homepage and follow the
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To view this opportunity
1) Login to the system.
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3) Find the opportunity you are interested in and click the blue underlined title
4) View the details.
To register interest
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Tenders may be submitted electronically
Yes
Languages that may be used for submission
English
Award decision date (estimated)
23 March 2026
Award criteria
| Name | Type | Weighting |
|---|---|---|
| Quality | Quality | 60.00% |
| Price | Price | 40.00% |
Other information
Payment terms
Refer to tender documentation
Applicable trade agreements
- Government Procurement Agreement (GPA)
Conflicts assessment prepared/revised
Yes
Procedure
Procedure type
Open procedure
Contracting authority
Wiltshire Council
- Public Procurement Organisation Number: PDZR-9968-RYYY
County Hall
Trowbridge
BA14 8JN
United Kingdom
Region: UKK15 - Wiltshire CC
Organisation type: Public authority - sub-central government