|Location Map ( geo)|
|From:||Port Solent (SU646046)|
|To:||North End (SU644019)|
|Distance:||2.5 miles (4 km)|
|Meets:||A27, M27, A3|
|Route outline (key)|
The M275 shares two spurs with the M27: one to the A27/A3 at the western half of J12, and the other to the A27 trunk route section, to the east of J12. Both roads have the number 'M27 M275' displayed on the chopsticks sign, and after that all the signs refer to the M27/M275 split.
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.