It provides access to the redevelopment of the Llanwern Steelworks site and forms the city's main access to the east as well as a diversionary route in the event of the M4 being closed to the north of the city.
It was formed as an upgrade of the previously private D2Queen's Way road through the Llanwern Steelworks (the road still retains this name) and existing public roads at either end. The section from the steelworks to the M4 was previously a rare section of S3 road. Such roads are now even rarer as, following the upgrade, this section is now WS2.