B6426 (St Albans - Water End)

This article is about the former B6426 between St Albans and the A1 south of Hatfield.
For the current B6426, in Hatfield, see B6426.

The now-unclassified B6426 near North Mymms

The B6426 was a short road in south Hertfordshire. It was originally unclassified but gained its number around 1930.

The road started on the A414 (now A1057) to the east of St Albans and headed south briefly before continuing southeastwards, keeping in this direction for the remainder of its route. It crossed the A405 (now A414) before going through Colney Heath and then met the B556 in Roestock.

After skirting North Mymms Park the road ended on the A1 in the Water End area of town. Construction of the A1(M) in the 1970s severed the eastern end of the B6426 and downgraded the A1, with the result that the former course of the A1 was downgraded to Class II, becoming a long southern extension of the B197, as did the the B6426 between Colney Heath and Water End. Eventually, with further changes in the area, both the former A1 and this section of the B6426 became the C174.