M25 Widening
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Scheme Outline
Widening of the M25 between junctions 12 and 15 to dual-five lane, and provision of a new spur road to Heathrow Airport between junctions 14 and 15, connected to the M25 via a new free-flow junction. Six lanes each way will be provided between junctions 14 and 15.
As of April 2004, the Highways Agency has announced its intention to widen the rest of the M25 to at least dual four lane carriageways, except junctions 3 to 5.
Project Statistics
- Cost
- Unknown
- Finance
- Central Government
- Estimated completion of works
- January 2006
- Length of works
- 8 miles
Progress
- December 2005
- Work on junctions 12-15 is completed and the road opened fully to traffic.
More Information
- Website
- www.highways.gov.uk
If you know more
If you have more details on this scheme - a correction to the information shown here or an update on the progress of works - please click here and share your knowledge.
With thanks to Jim Rayner, Dave Ryan and Gerry McKenna for his help towards this page.

