Pryd gafodd yr M4 rhwng cyffordd 45 a 46 ei arwynebu ddiwethaf?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 03/05/2023
The M4 carriageway between junction 45 and 46 was last fully resurfaced with hot rolled asphalt in March 1996.
Hot rolled asphalt has a longer durability and serviceable life than other commonly used surfacing materials.
South Wales Trunk Road Agent (SWTRA) regularly inspects this section of the M4 and repairs carriageway safety-related defects as and when they arise.