B24 (Northern Ireland)
|Distance:||10.4 miles (16.7 km)|
|Now part of:||C297, B177, A49|
|Route outline (key)|
The B24 was a cross-country B-road in north County Down.
It reached a crossroads to the north of Annahilt, where it is necessary to TOTSO left in order to follow the original B24. The road then headed east into Ballynahinch, where it ended in the centre of town on the A24.
The B24 did not last long, being upgraded to the A49 in the mid-1920s. However, following the construction of the M1 the A49 was rerouted to the north, along a shorter, parallel road. As such, only the easternmost section of the ex-B24, entirely within Ballynahinch, is now part of the A49, explaining why that road has to TOTSO. The mile or so to the west of this point is now part of an extended B177 and the remainder is now the C297, so technically unclassified.