Traffic was brought to a standstill on the eastbound carriageway of the Prince of Wales Bridge on Sunday, February 22, after a car collided with the central barrier shortly before 1pm.
The crash, which involved two vehicles, resulted in lanes two and three being closed while emergency services attended the scene.
The vehicle struck the central reservation, causing significant damage and leading to delays of up to an hour for motorists travelling eastbound.
Emergency services were called just after midday.
A spokesperson for the South Western Ambulance Service NHS Foundation Trust (SWASFT) said: “We were called at 12:05hrs on Sunday 22 February to a road traffic collision near Prince of Wales Bridge. We sent one double-crewed land ambulance to the scene.”
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Highways officials also attended to manage the incident and assess the damage to the motorway infrastructure.
A spokesperson for National Highways said: "We were called to reports of a two-vehicle road traffic collision on the Prince of Wales bridge eastbound, with lanes 2 and 3 initially closed.
“There was damage to the central reservation and cones have been put in place for safety until we can undertake a repair during an overnight closure."
Temporary traffic management measures were put in place, with cones installed to secure the damaged section of the central reservation until permanent repairs can be completed during a planned overnight closure
All lanes were later reopened, but not before long delays had built up for drivers heading towards England.
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