A40 Thornhill maintenance scheme

Details and timescales of this major project of urgent repairs

Work to carry out significant resurfacing and maintenance on this major route into Oxford will begin on Monday 22 July 2019. 

The £1million project will include resurfacing of the westbound carriageway of the A40 between Thornhill Park and Ride and Ridgeway Road, drainage repairs, duct
installation and new kerb installation. The work is expected to last up to four weeks and, although there will be disruption during this period, it is hoped that the new surface will not need further structural maintenance for many years to come.


  • Improve the road surface of this extremely busy route into Oxford, this will mean that no major road reconstruction will be required on this stretch of road for many years to come
  • Repair and replace all damaged road gullies with new heavy duty covers.
  • Formally close the gap in the central reservation at Collingwood Road with new kerbs to prevent unsafe traffic movements.


The A40 at Thornhill is an extremely busy dual carriageway, carrying traffic from the M40 into Oxford and beyond. This is also a busy bus route accommodating local
bus routes from the Park & Ride site as well as coaches travelling to and from London and Heathrow and Gatwick airports. 

The maintenance work provides an opportunity to carry out urgent repairs which are expected to provide many years’ service performance. 

Traffic management

The county council has designed the traffic management to minimise the impact on residents, businesses and all road users affected by these works. 

The temporary traffic management required to safely construct the road works include lane closures, speed limit reductions and night-time working. Delays are likely throughout the works and everyone is being asked to review their daily route, mode of transport and time of travel and where possible consider alternatives.


A budget of approximately £1million has been made available for the design and delivery of this project. This forms part of the Carriageway Structural Maintenance
Programme of works being delivered in Oxfordshire this financial year.