|Location Map ( geo)|
|From:||Clarence Parade, Southsea (SZ646983)|
|To:||Bradford Junction, Fratton (SZ649998)|
|Via:||Lennox Road South, Victoria Road South, Victoria Road North|
|Distance:||1 miles (1.6 km)|
|Meets:||A288, B2154, A2030|
|Old route now:||B2154, A2047|
|Route outline (key)|
The B2151 consists of a mile of urban road in Portsmouth providing the main route from Southsea to Fratton.
Its present route starts opposite the Pyramids Centre on the seafront and heads north, crossing the B2154 Albert Road / Elm Grove on the way. It ends at a roundabout just southwest of Fratton station where the other three exits are numbered A2030.
The route has been altered at its southern end and cut back considerably in the north since its 1922 début. Then, it started on the A288 in Eastney and headed west along what is now the B2154 to meet its current route at the north end of Victoria Road South. The northern part of the route used to continue up Fratton Road (now the A2047) to end on the then-A3 London Road.
In April 2013 the southern end of the B2151 was severed when the council installed bollards in Lennox Road South to prevent it being used as a through route. This was an unusual decision for a classified road that then left motorists in the rather bizarre situation of having to use unclassified side streets as an alternative, although some maps show Lennox Road South was declassified at this time. 
The restriction was short-lived though, and the bollards were removed 3 months later in July after concerns were raised by the Hampshire Fire and Rescue Service.