A4240 road

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A4240 shield

Major junctions
East endA484 (Loughor)
 A484 A484 road
A48 A48 road
A483 A483 road
[ M 4  ] M4 motorway
West endM4 Motorway Junction 47 (Penllergaer)
Road network

The A4240 is a main road in Gorseinon, Swansea, Wales.

Route description[edit]

The A4240 begins at the roundabout at the Loughor side of the Loughor bridge. The road heads east through Loughor, then onwards through Gorseinon, where it forms the east-west main road intersecting with the B4296 in central Gorseinon. The A4240 then continues through the Garngoch Industrial Estate and then through Penllergaer after which it continues along a single carriageway shared with the A48 until it reaches the roundabout which forms Junction 47 with the M4 Motorway.


  • Swanesa A-Z Street Atlas. Geographers A-Z Map Company Ltd. ISBN 1-84348-150-2.

Coordinates: 51°40′09″N 4°02′17″W / 51.66904°N 4.03799°W / 51.66904; -4.03799