The A2690 is the number for the Bexhill to Hastings link road (Combe Valley Way), which was obviously taken from the A269 at Bexhill.
The road, which opened to the public at 2pm on Thursday 17th December 2015, is single carriageway (S2+1 and S2) and runs from the centre of Bexhill to its current terminus at Queensway (B2092).
The newly built road starts at the junction with the A269 and A259. The old A269 at this point being a small residential road and bus lane. The road's route is along the old railway to Bexhill West Station, passing under modified railway bridges. After passing under the A269 and under a fairly spectacular arch bridge, the road meets a roundabout with the A2691, which creates a junction to business estates and provides a link to the A2036.
Glovers Lane Bridge over the Hastings-Bexhill Link Road
The road is now National Speed Limit, and carries on through the countryside, turning right toward Hastings. After climbing the hill (by crawler lane if needed), the road crosses over the Hastings Line and meets the B2092 at a traffic light controlled junction. Here the road ends, but the proposed route from here is to take over Queensway and turn it from the B2092 to the A2690. After the Queensway Gateway road (an A21 link road) is finished, the number will occupy this section too. For now, the road is from Bexhill to Queensway and only two signs on the A2036 bear the number 'A2690'.