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137:, central Wales, with a total length of 12 miles (19 km). It begins at a junction with the
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which it crosses six times. River crossings include those of the
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212:"The 10 best road trips in the UK"
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37:30.5 mi (49.1 km)
175:Monmouthshire and Brecon Canal
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107:Roads in the United Kingdom
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153:to a junction with the
193:between Pencelli and
189:at Talybont and the
157:3.5 km east of
16:Road in Powys, Wales
185:at Llangynidr, the
301:Transport in Powys
201:, east of Brecon.
120:A and B road zones
61:Northwest end
47:Southeast end
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29:Route information
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210:Dorey, Martin.
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205:Further reading
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42:Major junctions
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272:. Retrieved
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262:"B4558 road"
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229:. Retrieved
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183:Afon Crawnon
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98:Road network
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270:. Microsoft
199:Groesffordd
195:Llanfrynach
147:Crickhowell
141:across the
69:Groesffordd
55:Crickhowell
290:Categories
240:References
187:Caerfanell
163:Llangynidr
151:Usk valley
143:Usk bridge
139:A4077 road
131:B4558 road
51:A4077 road
267:Bing Maps
254:Microsoft
226:0140-0460
217:The Times
115:Motorways
274:14 April
231:17 March
171:Pencelli
155:A40 road
79:Location
65:A40 road
264:(Map).
84:Country
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169:, and
159:Brecon
34:Length
258:Nokia
145:from
135:Powys
67:near
53:near
24:B4558
276:2020
233:2023
222:ISSN
181:and
129:The
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