M25 Widening J12-15
- Upgrade to existing road under motorway restrictions
- Highways England
- Region: South East
- Central Government
- 12.8 km
- 8 miles
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.
|14 December 2005||Work on junctions 12-15 is completed and the road opened fully to traffic.|
This scheme has been completed, so it's no longer possible to edit any of the information on this page.
This scheme was last updated on 26 October 2008.