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The Problems
A34 Chieveley / M4 Jct 13 Improvement
The problems are…
The A34 is the main route between the ports of Portsmouth and Southampton, and the Midlands. Following the opening of the Newbury Bypass in November 1998, the A34 between M3 Junction 9 and M40 Junction 9, north of Oxford, is dual carriageway throughout. The A34/M4 junction is the only at grade roundabout on the route.
During an average day the A34 in the vicinity of Junction 13 carries approximately 60,000 vehicles, of which about one third are A34 through traffic. Approximately 16% of these vehicles are Heavy Goods Vehicles.
Congestion often occurs at the junction during peak hours, with traffic queues extending back onto the M4 motorway and for a considerable distance along the A34. The current congestion at Junction 13 results in 'rat-running' through local villages.
Predicted traffic growth will further increase the present delays and lead to more severe congestion at the roundabout.
The main objective of the scheme is to improve the free flow and safety of traffic on the A34, by providing unimpeded flow for the north-south through traffic. This would help to alleviate congestion on the roundabout and the slip roads forming Junction 13 of the M4.
- Congestion at A34 Northbound approaching Chieveley roundabout
- Congestion at A34 Southbound approaching Chieveley roundabout
- Congestion on M4 Motorway Eastbound & Wesbound Exit slip roads
- Speeding motorists
- Inappropriate overtaking
- Inappropriate speed approaching Chieveley roundabout
- Vehicles jumping traffic lights
