|Location Map ( geo)|
|Distance:||21.7 miles (34.9 km)|
|Met (1923):||A24, B2142, B2140, A284, B2144, A29, B2145, B2144, A27|
|Now part of:||A259, B2140|
|Route outline (key)|
B2143 was the number originally given to the route running from Worthing to Chichester via Littlehampton, where it crossed the River Arun via a ferry, and Bognor Regis. On 1 April 1924 the Bognor to Chichester section was upgraded to become the A294, while the remainder had been reclassified as an extension of the A259 by 1930.