Birmingham New Road
Construction of the road began on 4 February 1924, and was built in individual sections. The route went through Bury Hill Park in Rounds Green, which resulted in the park lodge and refreshment rooms having to be demolished and rebuilt. It provided jobs for at least 470 unemployed workers in surrounding areas including Birmingham, Wolverhampton, Dudley, West Bromwich, Smethwick and Oldbury. It was opened by the then Prince of Wales (later Edward VIII of the United Kingdom) on 2 November 1927.
The road has previously been a Trunk Road (looked after by the Highways Agency), but was detrunked on 13 November 2008.
National Express West Midlands services 8 and X8 serve the majority of the A4123 from Wolverhampton to Dudley while National Express West Midlands service 126 serves most of the section from Dudley to Birmingham.