This article is about the original route between Winceby - Partney in Lincolnshire. For the current route north of Peterlee, Durham, see B1432.
The B1432 was a rural B-road in east Lincolnshire. The road was originally unclassified, gaining the B1432 number in the mid-1930s. However, the number was short-lived as the road was renumbered when the A158 was rerouted over it after World War II.
The road started on the A158 to the north of Winceby. That road originally headed south from here along the present B1195 whilst the B1432 headed east. It descended into Hagworthingham and then crossed the River Lymn before skirting the southern edge of Sausthorpe. A couple of miles further on the road reached the A16 to the south of Partney and ended.