The B2259, which follows the former, pre-bypass route of the A259 through Bognor Regis, begins at North Bersted, on the northern edge of the town, at a roundabout where the A259 turns east at the start of the North Bersted Bypass section of the Bognor Relief Road (the second stage of which opened on 3 March 2016).
Our route heads southeastwards along Chichester Road into the centre of Bognor, reaching a large roundabout which marks the end of the A29's seaward journey.
From here the B2259 continues on a generally eastward course, still following the old route of the A259, out through the suburb of Felpham – where the B2132 runs on towards Middleton on Sea while we turn north to rejoin the A259 at the eastern end of the Bognor Relief Road at Flansham.
The B2259 number was reserved for use on the old route of the A259 on 2 January 2008, although it was to be eight years and more before the whole bypass was completed.
