A30 Crooked Billet roundabout
Improving the Crooked Billet roundabout to reduce congestion, queuing traffic and journey delays during peak hours.
Improvements include realigning the east and westbound carriageway markings through the centre of the roundabout to avoid unnecessary lane changing and widening of the A30 eastbound exit lanes approaching the roundabout.
The existing subway will be removed and replaced with new pedestrian and cycle routes across the roundabout. This will link into the new pedestrian/cycle routes towards Staines and Heathrow, to be installed by Surrey County Council.
Other works will upgrade and synchronise the existing traffic signals to improve traffic flow.
Widening the eastbound approach to the roundabout will reduce queues
The A30 eastbound approach to the roundabout has two sub-standard width dedicated lanes which operate as a single lane, thus reducing the capacity. Widening the lanes for a short section where the road bends to the left to enter the roundabout will allow the road to operate with two lanes throughout.
Reason for reducing the number of lanes through the roundabout
The A30 approach and exit lanes to the roundabout have three lanes, however there are four lanes through the centre of the roundabout. It is proposed to amend the carriageway markings through the centre of the roundabout, to remove the underutilised 4th lane, and provide three wider lanes. This will remove unnecessary weaving and improve safety.
Improvements proposed for the left turn from Stanwell Moor Road to London Road
A new toucan crossing is proposed as part of the new central route for pedestrians and cyclists crossing to Stanwell Moor Road. The left turn lane will hold traffic while the pedestrian crossing is being used and allow ahead traffic towards A308 Kingston to run at the same time.
Proposed traffic signal upgrades
The performance of the traffic signals on A30 Crooked Billet have been reviewed. We are proposing the introduction of a new signal control system which will improve the operation and efficiency of the junctions.
Proposed street lighting upgrade
We have reviewed the street lighting as part of this scheme. It is proposed to replace the existing high-pressure sodium lamps with more efficient LED lamps. In addition to being low energy they will also reduce light pollution.
The new routes will link into the wider Staines Sustainable Transport Package (STP). This is a transport scheme which Surrey County Council and Spelthorne Borough Council plan to implement to make it easier for people to get around the area on foot, by bicycle and public transport. More information is available on the Surrey County Council webpage.
Frequently asked questions
Q Why are you removing the Bus Stop Layby east of Stanwell New Road?
The layby on the A30 London Road westbound direction is being removed as this will now form part of a new traffic lane. A temporary bus stop is in place throughout the duration of the works, with a newly relocated bus stop being reinstated at the end of the scheme, a short distance to the east of the existing bus stop.
Q What is happening regarding the footbridge to the south of the roundabout?
Residents highlighted in the October 2018 Public Information Event that they would like to see the footbridge kept where it is, and the design was adjusted to accommodate this. The use of the footbridge will be monitored following the completion of the scheme to see if its long-term retention is still merited. The footbridge is a Surrey County Council structure so they will make the final decision on whether the footbridge is redundant, either at the end of its serviceable life cycle, or before.
Q Why is the preferred route for pedestrians and cyclist through the roundabout?
A shared use footpath and cycleway is proposed to replace the current route via the subway. These proposed works will complement the wider efforts to enhance cycle route provision in the wider Staines Sustainable Transport Package, providing a link between Staines and Heathrow.
Q Why is the subway being removed?
The proposed design includes a proposal to improve pedestrian and cycle routes by replacing the existing subway on the A30 west side with a new route through the roundabout with new crossings. This will provide a safer and more direct link for both pedestrians and cyclists. The existing subway head height is sub-standard for cyclists. There have also been problems of anti-social behaviour and flooding issues. The subway is to be infilled and landscaped.
Q Why is the crossing adjacent to Stanwell New Road being moved?
The existing crossing is a two-stage staggered pedestrian crossing which does not cater for cyclists. Moving the crossing to the north allows the crossing to be a single stage crossing which will making crossing the carriageway quicker and easier for pedestrians and cyclists.