M4 reopens between Swansea and Llanelli after closure
- Published
The stretch of the M4 to Junction 49 Pont Abraham was closed following the crash
The M4 has reopened after a three-hour closure between Swansea and Llanelli.
There were several miles of queues between Pont Abraham in the west and Morriston in the east, after what South Wales Police called a "serious incident" at 11:30 BST.
An air ambulance landed on the westbound carriageway between junction 47 at Penllergaer and junction 48 at Hendy.
Traffic Wales said by 14:45.
Police had urged drivers to avoid the area and diversions were in place along the A48 through Pontarddulais and Penllergaer - with heavy congestion reported on alternative routes.
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The closure affected holiday traffic returning from west Wales and people travelling to the ferry ports of Milford Haven, Pembroke and Fishguard.
The Welsh Ambulance Service confirmed one air ambulance and four land vehicles were sent to help police with the incident.