Local highways “can manage” says CEMEX as application submitted to route 121 HGVs a day via Sutton Lane

The local highways network “can manage” with the additional traffic from a new quarry in Richings Park, says CEMEX, the company behind the scheme.  It has modelled the cumulative impact of the Heathrow Express depot relocation to Langley station, and its existing quarry in Riding Court Farm, and concluded they “would not be at a level to create highway capacity or significant road safety risks”.

CEMEX will route 121 HGVs a day into and and out of its new quarry via Sutton Lane.

CEMEX will route 121 HGVs a day into and and out of its new quarry via Sutton Lane.

CEMEX submitted a planning application for its proposed new quarry on the old Langley airfield site at the end of last month.  The application, rushed through to allow extraction of gravel from the site before the Western Rail Access to Heathrow makes it permanently inaccessible, will see another influx of HGVs and other large vehicles on Sutton Lane in Brands Hill and the Colnbrook By-pass.

The site will be accessed from North Park using the existing field access along the southern boundary. The
existing access will be widened and visibility improved.

Despite the chaos that has hit local roads since August the company has submitted a Transport Assessment that says the local highway network can cope, even with other projects that are currently under way.  However, it acknowledges that it has not taken into account traffic generated from the Western Rail Access to Heathrow.  That, it says, would be up to WRAtH to do as its plans are not sufficiently advanced yet.  However it suggests there are “potential synergies between the two schemes which, if realised could reduce the HGV movements and ‘miles’ of both schemes”.

Even with the timing of these schemes overlapping with this development, if planning permission is granted, the highways can manage with the increase traffic from these developments.

The total output of mineral from the site would be approximately 400,000 tonnes per annum.  Hours of operation proposed would be 7am to 6pm Monday to Friday and 7am to 1pm on Saturdays.  There would be no working on Sundays or bank holidays. There would be approximately 32 staff based at the site each day.

All HGVs associated with the site would be instructed to turn out of the site to the west towards Langley and Colnbrook, along North Park to the junction with Parlaunt Road and Sutton Lane. They would then travel south along Sutton Lane to the A4 at Brands Hill. From there HGVs would either travel east along the A4 into London or west to the M4.  CEMEX says it would be willing to enter into a routing agreement, but the location of the site presents a huge challenge in that HGVs travelling east from the site would be bitterly resisted by Iver residents, while Brands Hill currently suffers from appalling air quality and, currently, rush hour congestion.

The majority of the traffic generated by the development will be in the form of heavy goods vehicles (HGVs).  The Transport Assessment submitted assumes a worst case traffic/trip generation scenario to assess the impact on the proposed road route with HGV movements based on 20 tonne capacity aggregate tippers. The HGV movements are shown below.

Source: CMEX application

Source: CEMEX application

CEMEX says even during the busiest years of operation its impact on the road network would be insignificant compared to other, bigger, projects:

“The most intense activity will be during Years 2-5 when mineral extraction and inert waste importation would be taking place to restore the site. However, even during these periods and when considering the traffic generated from other developments such as HS2- HEx and Datchet Quarry vehicles would not be at a level to create highway capacity or significant road safety risks”

A routing agreement for HGVs and Alternations to the junction of North Park/Parlaunt Road and Sutton Lane are among mitigation measures that could be put in place.

An Air Quality Assessment has demonstrated that the designed mitigation measures for the development will provide an “appropriate level of mitigation” at the site. The assessment also concluded that the increase in traffic volumes on local roads due to the proposal will lead to “a negligible impact on local air quality”.

The application is being handled by Bucks County Council and the last date for comments is Tuesday, 22nd November 2016.  Comments can be made online at: http://publicaccess.buckscc.gov.uk.

External Links

View the Non-Technical Summary of the application here.


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