Overnight works to reconstruct the road around Derriford Roundabout are programmed to begin from Monday 27 November as part of the Derriford Transport Scheme.
All work will be carried out at night and no closures or diversions will be in place before 7pm or after 6am, to avoid peak traffic times and minimise disruption.
This work is weather dependent so traffic regulation orders (TROs) advertised in the press cover a longer period than works will actually take.
The works will be carried out in phases with the following traffic management arrangements:
Phase one (from Monday 27 November)
Temporary closure of Looseleigh Lane between Looseleigh Close and Derriford Roundabout (both directions). Access will be via the George Junction and Southway Drive.
Work will take around seven nights but the TRO covers a period of four weeks. The closure will only be in place on the nights when work is carried out.
Phase two (from Monday 11 December)
Temporary closure of the Looseleigh Lane approach to Derriford Roundabout, continuing round onto a short section of Tavistock Road outbound.
Traffic heading north of Derriford Roundabout from the Looseleigh Lane area will be diverted via Southway Drive, re-joining Tavistock Road at The George Junction.
Works will take around three nights but the TRO covers a period of three weeks. The closure will only be in place on the nights when work is carried out.
Phase three (from Monday 18 December)
Temporary closure of Tavistock Road inbound from Plymbridge Lane to Derriford Roundabout. Traffic will be diverted from the George Junction via Southway Drive and Looseleigh Lane.
Temporary closure of Derriford Road from Derriford Roundabout to Plymbridge Lane. Access from the outbound side of Tavistock Road and Looseleigh Lane will be via the short section of bus lane on Plymbridge Lane. Access from inbound side of Tavistock Road (north of the roundabout) will be via Runway Road and Plymbridge Lane.
All traffic exiting Derriford Road will be diverted via Plymbridge Lane and Runway Road, where all vehicles will be able to turn right onto Tavistock Road using the bus gate. Traffic wanting to travel inbound towards Plymouth will then be diverted from The George Junction, via Southway Drive and Looseleigh Lane and back onto Tavistock Road.
Work will take around six nights but the TRO covers a period of four weeks. Closures will only be in place on the nights when work is carried out.
Phase four (from Friday 12 January 2018)
Partial closure of the Brest Road approach to Derriford Roundabout, continuing round onto Tavistock Road. Access into Brest Road will be maintained at all times. When access out of Brest Road is restricted, traffic will be diverted via William Prance Road. One inbound lane will remain available on Tavistock Road at all times.
Works will take around five nights but the TRO covers a period of three weeks.
Phase five (February 2018)
When the reconstruction works have been completed, the road will need to be resurfaced. This will require temporary overnight closures of the roundabout itself, a quarter at a time. Full details will be announced nearer the time.
Affected residents and businesses will be given advance warning of when work is due to begin nearby. Motorists will be reminded of upcoming works via digital and on-street signs. Diversions will be fully signposted.
The Derriford Transport Scheme is vital to delivering homes and jobs in the north of the city. The Heart-of-the-South-West Local Enterprise Partnership (HotSW LEP) is contributing £10.16 million towards the £13 million scheme.