The B1434 is a rural B-road in north Lincolnshire. It was originally unclassified but got its number in the mid-1930s.
The route starts by turning off the A46 at Owersby Moor and heads vaguely northwestwards across what is more fen than moor, although the place names would have us think otherwise. After Holton le Moor we reach Moortown, where we are crossed by the B1205.
After going over a small hill we pass to the east of North Kelsey, necessitating sharp bends left, right, and (after a few hundred yards) right again. The road then zigzags through Howsham before continuing for another mile or so to end at a triangular junction on the A1084.