Drivers in Portsmouth's city centre are being advised to expect some delays while temporary traffic lights are in place on Stanhope Road in the coming weeks.
One lane of Stanhope Road will be closed from 9.30am on Monday, 15 May, until the evening of Friday, 19 May, with temporary traffic lights letting cars travel in one direction at a time.
The lights will then be removed and lanes reopened for the weekend before the restrictions return from 9.30am on Monday, 22 May, until midday on Friday, 26 May.
During the times the restrictions are in place the parking spaces and taxi rank on Stanhope Road will also be suspended.
The work is part of McAleer & Rushe's development of Catherine House, formerly Zurich House, so that it can be connected into the sewer network that runs through the road.
Catherine House is being transformed into a combination of a hotel and student accommodation.
Eamonn Laverty, McAleer & Rushe's project manager, said: "We appreciate this work will cause some delays to traffic in the city centre but we're doing everything we can to minimise disruption and complete the work as quickly and safely as possible.
"We are asking drivers to avoid the immediate area of the work if at all possible and try to use alternative routes and we're very grateful for everyone's patience and cooperation."
A second phase of work will take place in July with full details to be announced nearer the time.