Mynachdy Interchange

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Mynachdy Interchange
Location Map ( geo)
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Highway Authority
Junction Type
Roads Joined
A48, Llantrisant Radial
Junctions related to the A48(M) (Llantrisant Radial)
Cardiff West Interchange • Radyr Interchange

Mynachdy Interchange was a planned junction in Cardiff where the unbuilt Llantrisant Radial would have joined the A48.

Buchanan Route layout
Two routes were planned for the Llantrisant Radial. They were the Buchanan and River routes. The location of the junction would be dependant on which route was selected. The road was never built and the only clue that the junction was planned is the splaying of the Western Avenue slip roads at Gabalfa Interchange which were built to allow provision for the junction that was never needed in the end.
River Route layout


Route To Notes


M4 (E), Newport, University Hospital


Cardiff (W), Cardiff Airport


M4 (W), Llantrisant
City centre

Mynachdy Interchange
Other nearby junctions
CardiffAdamsdown Interchange • Albany Road Interchange • Butetown Interchange • Cardiff West Interchange • Coryton Interchange • Culverhouse Cross roundabout • Fairoak Interchange • Gabalfa Interchange • Grangetown Interchange • Heathwood Road Interchange • Llanishen Interchange • M4 J31 • Newport Road Interchange • Pentwyn Interchange • Radyr Interchange • Splott Interchange • St Mellons Junction • The Flourish • The Magic Roundabout (Cardiff) • Ty Glas Interchange
Junctions on the A48
Highnam Roundabout • Highbeech Roundabout • Parkwall Roundabout • Coldra • Beatty Road Roundabout • Hartridge Farm Road Roundabout • Balfe Road Roundabout • Queensway Meadows Roundabout • Nash Road Roundabout • Church Street Roundabout • Maesglas East • Maesglas West • Ebbw Bridge Roundabout • Tredegar Park • St Mellons • Culverhouse Cross • Sycamore Cross • Waterton Cross • Margam • Groes • Earlswood • Lon-Las • Llangyfelach • Penllergaer • Pont Abraham • Cross Hands • Pensarn