|Location Map ( geo)|
|From:||Horseley Heath (SO973922)|
|Distance:||2.2 miles (3.5 km)|
|Meets:||A461, B4149, A4034|
|Route outline (key)|
The B4166 is an urban B-road in the Black Country.
Its current western end is on the A461 in Horseley Heath, after which it heads east along Tame Road to a T-junction where it has to TOTSO right. The road to the left is the road's original route which continued north a short distance to the A41 Great Bridge Street, now bypassed.
Heading south, the B4166 goes through New Town before reaching a set of traffic lights. It has to TOTSO right here as well. The road to the left is the B4149 to Sutton Coldfield, although much of that road has since been renumbered.
Continuing south, the B4166 goes along Oldbury Road, emphasising its final destination. There is another TOTSO right across the canal in Albion before the road goes under the Stour Valley Line and then splits. In this direction the B4166 bends sharply left to go along Fountain Lane and reach the A4034 at traffic lights just to the south of Sandwell & Dudley station. However, the original route of the B4166 continued along West Bromwich Street to meet the A4034 in the centre of Oldbury; this road now begins with a one-way section leading north off the Oldbury Ringway.