A228 Leybourne and West Malling Bypass

Key facts

A228 Leybourne and West Malling Bypass

The A228 is an important primary route in Kent serving existing communities as well as new and proposed housing and development areas. The Leybourne Bypass West Malling plays a key role in reducing congestion and is a vital link to the major mixed use development at Kings Hill.

Following supporting Kent County Council through a successful planning application, securing funding, and a CPO Enquiry, PBA was appointed as engineering consultant to undertake the detailed design of the works including highways, civil structures, geotechnical and environmental services. The £30million scheme design needed to balance the capacity requirements of the M20 motorway with the outcomes of a prolonged public consultation.

PBA co-ordinated the Environmental Impact Assessment and prepared the Environmental Statement including prediction of noise and air quality effects, route evaluation studies, traffic study and economic assessments. We evaluated multiple alternatives and value-engineered the proposed scheme to a two-lane route which was economical, deliverable and acceptable both environmentally and to the local community.

The scheme provides improved access between Kings Hill and the M20 Motorway, including a new 30 m span road-over-rail bridge, a two span reinforced concrete highway bridge, a 55 m long steel arch pedestrian bridleway bridge and a bypass to the local community of Leybourne.