There are a range of options Rhun ap Iorwerth could take - but so far he has committed to none of them.
Rhun ap Iorwerth said the Brynglas Tunnels in Newport are an "economic problem for Wales".
Wales' Senedd election has seen the potential for an M4 relief road return as a political issue.
The bridge over the M4 at Bristol will open to all traffic on 20 June after closing in 2023.
Both sides of the motorway were shut while the vehicle was recovered from an embankment.
The crash caused a "substantial spillage of oil and diesel" which required a complete resurfacing.
Wiltshire Police said the road will be closed until the afternoon.
Barry O'Sullivan is given a suspended sentence after driving into a broken-down car on the M4.
The occupants decided to leave their vehicle after it broke down on the hard shoulder of the M4.
