A12 Blackwall Tunnel NorthboundE+W+S
22. A length of existing highway proposed to be classified as the A12, commencing from a point at the South Portal of the existing Blackwall Tunnel Northbound, to a point at the North Portal of the existing Blackwall Tunnel Northbound, crossing the Borough boundary at the mid-point beneath the river Thames.
Identified by a green line on the classification of roads plans (classification).