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
The Ringways Map is here
The wait is over! The full map of the Ringways, London’s unbuilt urban motorway network, is now online. Not even the system's planners had anything like this.
Red, white and blue
Kent County Council is run by eurosceptic nationalists. So why are they putting EU flags on their road signs?
The sunlit uplands
On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.
Have you seen...
Aust to Beachley
Today two motorways cross the Severn near Chepstow. But as recently as 1965, the only crossing was a ferry that carried six cars at a time, from Aust to Beachley.
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