A477 St Clears to Red Roses Improvement

Scheme outline

The aims of the scheme are to improve safety, provide better overtaking opportunities, and reduce journey times on a sub-standard section of the A477 in south-west Wales.

The improvement consists of a new offline single carriageway road, 8.7 km in length, running from the A477/A40 St Clears roundabout and then bypassing Llanddowror and Red Roses to the north before re-joining the existing A477 at Llanteg. Sections of 2+1 will be provided to improve opportunities for overtaking.

The preferred route was announced in October 2006 and then amended follow a review in 2008/09.

The public local enquiry took place in June 2011.

This scheme was completed in and we're no longer accepting updates or changes to this page.

Bypass or realignment
for use by all traffic
Highway authority
Welsh Assembly


This scheme has been completed and we are no longer accepting progress updates.
21 January 2012

The de-trunking and side road orders were published in the London Gazette on 19 January 2012.

29 April 2012

Construction started on 12 February, according to the Welsh Assembly website.

19 November 2014

The new road opened to the public on 16 April 2014.

More information


With thanks to Owen H and Michael Pritchard for information on this page.