Cardiff Central Square

Constructing Excellence

The primary objective of the project was to accommodate the new Cardiff City Centre transport interchange and Central Square development. To achieve this, through-traffic was removed from Westgate Street by the introduction of a new bus gate. Furthermore, a new highway layout was implemented, improving connectivity between the existing bus network and the newly developed transport interchange, Central Square, Central Station, and the city centre enterprise zone.

The project involved the reconstruction of almost 1kmof new carriageway in the city centre, along with over6,500m2 of granite footpath paving. Pedestrian safety has been significantly improved through the implementation of wider footpaths, upgraded pedestrian crossing facilities, and a reduced speed limit of 20mph. As a result, there has been an overall enhancement of the public realm in and around the Central Square development and outside the Principality Stadium

Additionally, the project included the provision of more than 500m of segregated cycle infrastructure, linking the area to the proposed cycleway on Castle Street and Taff Trail routes. The designated cycle routes have been designed to ensure the safety of all road users, including the installation of new cycleway signals. Notably, the UK’s first cycleway pedestrian crossing was installed to enable safe crossing of the cycleway by individuals who are blind or partially sighted.

The revised highway alignment necessitated the installation of a new drainage system, which included a large surface water sewer with an outfall to the River Taff. Additionally, several SuDS systems were implemented, comprising of multiple innovative retrofitted tree pits and rain gardens. These systems were designed to alleviate surface water flooding, improve water quality, and enhance the environmental amenity and biodiversity value.

Three Winning Facts:
  1. Successful project delivery in a constrained city centre environment.
  2. Client, stakeholder and public liaison/relationships and benefits to the local community.
  3. Collaborative approach to the management of change.