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Location Map ( geo)
Cameraicon.png View gallery (6)
From:  Dunnington (SE648516)
To:  Great Driffield (TA013581)
Via:  Stamford Bridge
Distance:  24.7 miles (39.7 km)
Meets:  A64, A1079, B1228, B1251, B1248, B1252, A614
Old route now:  A614
Primary Destinations
Highway Authorities

East Riding of Yorkshire • North Yorkshire • York

Traditional Counties


Route outline (key)
A166 Dunnington - Great Driffield
A166 Great Driffield - Bridlington


The A166, at only 30 miles long, is one of the shortest and most lightly used primary routes around. It's a great road to drive on - wide, mostly straight, all but deserted, through rolling hills and open countryside, with only two nasty bits which are detailed below.

Dunnington - Great Driffield

The road starts at Grimston Bar. The A166 used to end here on the A1079 (former A66) and now both meet the A64 bypass here with a particularly horrible junction on the roundabout. The road heads northeastwards, bypassing Dunnington, to cross the River Derwent at Stamford Bridge, scene of the other battle in 1066. This large commuter village is desperately waiting for a by-pass, as all the traffic on the road currently has to cross the vintage single-track bridge, whose flow is controlled by traffic lights, and very long queues can build up at peak times.

Back in open country the road remains relatively flat but with a range of hills ahead which get closer. These are the Yorkshire Wolds and it soon becomes obvious that the road has to cross them. Presently the A166 reaches Garrowby Hill – a 1:6 hill where the road climbs up onto the Wolds. A series of surprisingly tight bends at the bottom of the hill, and poor visibility going up the hill itself, mean that you are all too likely to get stuck behind a lorry at speeds of 15-20mph. This bit of road needs a third lane added, and the bends straightened out, and it needs them now!


On reaching the summit the road descends to the village of Fridaythorpe before a steep hill (not as steep as Garrowby Hill, though) takes us to Wetwang. After running through Garton-on-the-Wolds the road bypasses Little Driffield to reach a roundabout on the A614 Driffield bypass, built in 1983. The A166 ends here - but it has only done so since 1996.

Like the A163, which was the number of the road to the right when the bypass was opened, the A166 was once a longer road. It continued eastwards to Bridlington where it ended on the A165 - but now the A614 has been greatly extended and has taken on the eastern third of the A166.

Original Author(s): Stevie D

Related Pictures
View gallery (6)
Fridaythorpe - Geograph - 120149.jpgAA Box No. 573, Garrowby - Geograph - 1838513.jpgRight side of the AA Box - Geograph - 2783312.jpgA166, Garrowby Hill with emergency run... (C) JThomas - Geograph - 1838510.jpgA614 Near Bessingby - Geograph - 1223468.jpg
Other nearby roads
NCN1 • A163 • A164 • A614 • B1249 • EuroVelo 12
A100 • A101 • A102 • A103 • A104 • A105 • A106 • A107 • A108 • A109 • A110 • A111 • A112 • A113 • A114 • A115 • A116 • A117 • A118 • A119
A120 • A121 • A122 • A123 • A124 • A125 • A126 • A127 • A128 • A129 • A130 • A131 • A132 • A133 • A134 • A135 • A136 • A137 • A138 • A139
A140 • A141 • A142 • A143 • A144 • A145 • A146 • A147 • A148 • A149 • A150 • A151 • A152 • A153 • A154 • A155 • A156 • A157 • A158 • A159
A160 • A161 • A162 • A163 • A164 • A165 • A166 • A167 • A168 • A169 • A170 • A171 • A172 • A173 • A174 • A175 • A176 • A177 • A178 • A179
A180 • A181 • A182 • A183 • A184 • A185 • A186 • A187 • A188 • A189 • A190 • A191 • A192 • A193 • A194 • A195 • A196 • A197 • A198 • A199
Defunct Itineraries & Motorways: A102(M) East Cross Route • A102(M) Southern Approach • A106(E) • A108(N) • A108(S) • A115 • A118
A132 • A122 • A135 • A138 • A139 • A147 • A154 • A160 • A167(M) • A168(M) • A176 • A180(W) • A180(E) • A194(M) • A194 • A195(M) • A195

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