|From:||Port Solent (SU646046)|
|To:||North End (SU644019)|
|Distance:||2.5 miles (4 km)|
|Meets:||A27, M27, A3|
|Route outline (key)|
There is a junction halfway along the stretch between M27 and Portsmouth city centre which serves a Park & Ride service to the city centre, and Tipner West. When it opened in 2014, the road gained two junction numbers.
An official opening ceremony was held for the motorway on 11 March 1976. Most of the motorway was built over reclaimed land, which meant the tidal beach at Stamshaw Bay would no longer be accessible to residents. A new beach and footpath were provided on the west side of the motorway, described as "a splendid amenity". Stamshaw Park is the remains of the Bay. New boating facilities have to be provided too.
When it opened, the M275 offered an alternative to the two vehicle routes out of Portsmouth. When it's closed, these two still have to take all the weight of the traffic. Prior to diversion symbols becoming widespread, Portsmouth City Council created their own symbols to direct traffic out of the city when the motorway was closed.