A section of Parkstone Road will be affected between 9.30am and 4.30pm for three days.
Drug Link To Portsmouth Woman's Death?
The death of a 28-year-old woman may be related to substance misuse, police have said.
Sasha Barber died at an address in Clarendon Road, Southsea, Hampshire, on Saturday.
A 20-year-old man was arrested in connection with her death but was later released without charge.
A powder found at the flat is being analysed by police to establish what it is and whether it is connected to her death.
Miss Barber's next of kin have been informed, according to a Hampshire police spokesman.
He said: "We can confirm substance misuse is being investigated as part of inquiries to establish the woman's cause of death.
"A post-mortem examination and toxicology tests will take place in due course as police prepare a file for HM Coroner.
"Powder was seized from the address. This is being analysed to confirm its contents and identity.
"The death is not being treated as suspicious.
"At this time, there is no evidence to suggest a crime or any links to other deaths or offences.''
It is understood that police do not believe the death is connected to ecstasy use.
Miss Barber is understood to have worked at the Spinnaker Tower at Portsmouth's Gunwharf Quays waterside retail and leisure complex.
A man's died in hospital after a crash in Eastleigh.
35-year-old Jemma Whibley Sentenced To A Year In Jail.
19 year-old Scammed 375 People, Will Serve 21 Months In A Young Offender Institution.
Recently Played Tracks
On TV: Heart's Happy Hour
10am - 11am
Now playing: Non-stop hit music
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
What's happening on the roads where you are?
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Find out more about some of the companies advertising on Heart.
Get some great ideas on how to advertise your business on radio, online and on mobile.