Motorists travelling the State Highway 2B Expressway between Westshore and Prebensen Drive are being advised to keep an eye out for contractors working along the estuary bridge stretch.
The work, which involves installing power attachments, got under way late last year and is being carried out intermittently.
The work is expected to be wrapped up by the start of next month.
Until then motorists are urged to be aware that work could be taking place, and that speed restrictions, and on occasions stop-go signalling, could be in place.
The latter may result in delays of up to five minutes.
It is one of five highway stretches across the Hawke's Bay network where delays can be expected due to maintenance and works.
On SH2 between Napier and Gisborne work is taking place at several road maintenance and reconstruction sites between Tangoio and Gisborne, although delays are expected to be minor.
Minor delays can also be expected between Pakipaki and Te Hauke on SH2 between Napier and Dannevirke where a passing lane is being constructed.
On SH5 between Napier and Taupo repair crews may be at work, at times, on the Mohaka River Bridge just north of Te Pohue.
Motorists are urged to stick to the 50km/h speed limit in place and to drive the stretch with caution.
There are also several small road maintenance sites between Tarawera and Taupo.
Pavement reconstruction and maintenance crews are also at work in the Tikokino district on SH50 between Napier and Dannevirke.