There will be a full city centre road closure in Cardiff from 4pm - 1am.
Cardiff Council will re-open the roads as quickly as possible after the boxing has finished.
From early in the day, Scott Road and Park Street will be closed as a result of the need to prepare Gate 5 and protect queuing fans.
The following roads will be closed as part of the full city centre road closure:
Civic Centre: Access to part of the Civic Centre will be controlled throughout the day, with access allowed only for event parking, limited commuter parking, loading and access to private car parks.
Roads affected include: King Edward VII Avenue, Museum Avenue, City Hall Road, College Road and Gorsedd Gardens Road.
If there are any safety concerns in connection with crowds queuing to go into the venue prior to gates opening, there may be a need to close Wood Street and Westgate Street earlier, along with lane restrictions adjacent to Gate 1 on Cowbridge Road East.
If there are any safety concerns relating to the queuing system at Cardiff Central Train Station, then Wood Street, Westgate Street, Park Street, Havelock Street, St Mary Street, Penarth Road, Saunders Road and Customhouse Street will remain closed until safety concerns are remedied.