Route
Junction number
12
Markerpost
107.8 km
Name
Marylands Interchange
Terminus
Not a terminus
Other routes
A1023, B1002
Authority
Restricted turns
Full access
Services
No services
A12 J12 Marylands Interchange
Layout and signage
|
Billericay A1023 (A129) Mountnessing Ingatestone B1002 |
B1002 | 
|
A1023 (A128) (A129) |
Brentwood A1023 Kelvedon Hatch (A128) |
Lane configuration
- Lane 1 continues, with option to exit.
- Lane 2 continues ahead.
- Lane 1 exits and does not return.
- Lane 2 continues ahead.
- Lane 3 continues ahead.
What's new
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A bridge that was ruined by another bridge, and a type of highway planning beyond any of the UK’s worst nightmares.
The monster seen from below
What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?
Have you seen...
London's Forgotten Arterial Roads
The 1920s and 30s saw a huge roadbuilding boom in London's suburbs. Some of those roads are incredibly well known, but here are five Arterial Roads that have been almost completely forgotten.
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