The A2290 is a fairly nondescript short stretch of semi-urban dual carriageway on the outskirts of Eastbourne.
It starts at a roundabout junction with the southern end of the A22 (the main route from London to Eastbourne) and the A2280. From here it heads south-east as Lottbridge Drove and signposted "town centre". An unclassified extension of Lottbridge Drove continues in the opposite direction into Hampden Park.
Entrances to industrial units, retail parks, the Eastbourne Miniature Steam Railway and a Tesco store (which gets a roundabout) are all there is to see before the classified route terminates on the A259, which has the road name "Seaside". Lottbridge Drove continues unclassified to meet the actual seaside at a roundabout by Prince's Park, which gives access to the Marina and the Sovereign Leisure Centre.
The road is D2 throughout and has debatable primary status: some maps claim the road to be primary but signage (which does not use the A2290 number at all) disagrees.