Projects

Marble Arch

Transformational Scheme: Busy junction improvements for cyclists and pedestrians

Project summary

Marble Arch junction, located in the heart of the City of Westminster, London, is a large traffic gyratory, carrying over 50,000 vehicles per day.

The central island of the junction houses the Marble Arch monument and gardens, which are popular destinations for thousands of visitors every day, and the busy Marble Arch underground station.

In 2008, formal traffic signal controlled pedestrian crossing facilities were introduced around the gyratory. These provided a surface crossing alternative to the old subway system. Cyclist crossing facilities were also added to accommodate the increasing number of cyclists navigating the busy junction safely.

However, controlled pedestrian crossing facilities were not extended to the Great Cumberland Place arm of the junction. As a result, this section remained uncontrolled, and cyclists often cross the busy circulating section without formal protection.

Marble Arch London Transport Planning and Engineering Traffic Modelling

The crossing over Great Cumberland Place is hazardous. Recent studies emphasised the need for a safe crossing due to high pedestrian traffic throughout the day. TfL, City of Westminster, the Portman Estate, and Almacantar collaborated to explore options for new pedestrian infrastructure.

City of Westminster commissioned NRP to develop a preferred pedestrian crossing solution. We delivered a scheme that met TfLs’ design, safety audit, and traffic modelling standards, as well as securing Westminster Cabinet Member approval. Our services included traffic modelling using LinSig, which adhered to TfL’s Model Auditing Process. We also conducted feasibility scheme design and engaged in stakeholder consultation. Additionally, we prepared a draft Traffic Signal Supplementary Report and managed Stage 1 safety audit review and response. The approved scheme was commissioned in November 2016.