{"id":42702,"date":"2026-01-06T13:41:43","date_gmt":"2026-01-06T13:41:43","guid":{"rendered":"https:\/\/www.systra.com\/ireland\/?post_type=projects&p=42702"},"modified":"2026-01-06T13:48:33","modified_gmt":"2026-01-06T13:48:33","slug":"increasing-capacity-safety-and-sustainability-at-key-street-junction-in-kent","status":"publish","type":"projects","link":"https:\/\/www.systra.com\/ireland\/project\/increasing-capacity-safety-and-sustainability-at-key-street-junction-in-kent\/","title":{"rendered":"Increasing capacity, safety and sustainability at Key Street junction in Kent\u00a0"},"content":{"rendered":"\n
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Technical details<\/div>\n \t
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Customer<\/div>\n\t
Kent County Council<\/div>\n\t <\/div>\n
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Dates<\/div>\n

Outline Design: 2019-2022 Detailed Design: 2022-2024 Construction Phase: 2024-2025<\/p>\n<\/div>\n <\/div>\n

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Missions<\/div>\n
Lead Designer, Engineering Design Consultant, Transport Planning Consultant, Environmental Consultant<\/div>\n <\/div>\n
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Localisation<\/div>\n
A249 \/ Key Street, Sittingbourne, ME9 8BS <\/div>\n <\/div>\n
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Partners<\/div>\n
Partner<\/div>\n <\/div>\n
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Perimeter<\/div>\n
Highway & Road Design & Engineering, Drainage,Walking& Cycling, Civil Engineering,Nature Positive – Ecology, Environmental Impact Assessment, Landscape Architecture, Environmental Consents & Planning, Transport Data Analysis & Visualisation, Public & Stakeholder Consultation, Business case & funding<\/div>\n <\/div>\n
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Activity<\/div>\n
Highways & Roads, Active Travel<\/div>\n <\/div>\n \n \n <\/div>\n<\/div>\n\n\n\n
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How to reconfigure THE road network for increased traffic ahead of new housing developments<\/h3>\n\n\n\n
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With more than 4,000 new homes planned to be built along the A249 corridor in the borough of Swale, Kent County Council (KCC) needed to develop the local road network to prevent traffic congestion and improve the infrastructure for safe walking and cycling.<\/p>\n\n\n\n

One critical junction in the network is the Key Street roundabout over the A249, near the town of Sittingbourne. It was identified by KCC as a strategic interchange requiring significant improvements to support anticipated traffic growth over the next 20 years. The junction needed to be redesigned to increase capacity, improve safety for all users, and introduce walking and cycling routes for residents.<\/p>\n\n\n\n

Having worked with Kent County Council on previous transport design, engineering and consultancy projects over many years, SYSTRA was appointed to design the necessary enhancements to Key Street junction and provide support for the construction programme.<\/p>\n\n\n\n

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Innovation in transport modelling, highways design and ecological management<\/h3>\n\n\n\n
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SYSTRA was responsible for the outline design, detailed design and construction support for the Key Street junction improvements. The full range of services we provided included business case development<\/a>, public consultation, highways <\/a>lighting, drainage and structural design, environmental consultancy, landscape design, geotechnical engineering and traffic modelling<\/a>. We also took on the role of principal designer. We assembled a project team comprising specialists from all these disciplines, overseen by our London Infrastructure team.<\/p>\n\n\n\n

Our design solution for the reconfigured Key Street junction incorporated:<\/p>\n\n\n\n