HE0915 M4 Junction 17 Improvement Works

Wiltshire Council
South West
Open procedure
27 April 2026 to 27 April 2028

Delivery of M4 Junction 17 improvements, comprising carriageway widening, circulatory carriageway expansion, and increasing motorway bridge lanes from two to three. The project includes the installation of traffic signals on all roundabout approaches and is structured in two phases: Early Contractor Involvement followed by full construction.

Open the official notice

Awarded value: £21.6m; As published
Published: 24 July 2025
Awarded: 26 March 2026; MJ Church (Plant) Limited
Contract length: 24 months; Ends 27 April 2028

What the contract covers

Works contract

Provision of complex highway infrastructure improvement works, including carriageway widening and traffic signal installation on major road networks.

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

Terms and requirements

Contract type: Works contract
Procedure: Open procedure
Initial term: 24 months
Contract dates: 27 April 2026 to 27 April 2028
Certifications asked for: None stated
Lots: 1
Suitable for SMEs: Yes
Category: Works
CPV codes: 45233110, 45233000, 71311000, 45233100

Services in this contract

Major road and junction schemesMain service£21.6m typicalM4 Junction 17 capacity improvement scheme with widening and signals

Lifecycle

Published
24 July 2025
Contract awardedto MJ Church (Plant) Limited
26 March 2026
Contract starts
27 April 2026
Contract ends
27 April 2028

The buyer

Wiltshire Council

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The supplier

MJ Church (Plant) Limited

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Main buyers

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Cite this contract

Link: https://bidskim.com/tender/324871/he0915-m4-junction-17-improvement-works
Buyer reference: HE0915
Open contracting ID: ocds-h6vhtk-056511
Last checked: 5 November 2026

Wiltshire Council. HE0915 M4 Junction 17 Improvement Works. Contract award, 24 July 2025. BidSkim, https://bidskim.com/tender/324871/he0915-m4-junction-17-improvement-works (accessed 5 November 2026).