Last update 8 November 2025
Mileages are given in the form miles.chains unless stated otherwise. Figures prefixed with ≈ are approximate, those in parentheses are not on this route but are given for reference. Reference to 'start'/'end' of an asset are as read down the page.
Later measure 0.00 Cardiff East Junction with SWM2 (170.18) 0.13 ownership boundary NR/TfW from 28 March 2020 0.17 intersection bridge over SWM2 (170.01) 0.22 Queen Street South Junction with CAM (0.67) Original measure 0.22 Cardiff East Junction with SWM2 (170.18) 0.39 intersection bridge over SWM2 (170.01) 0.44 Queen Street South Junction with CAM (0.67)