The Whakatu arterial link is still expected to open on time, despite being held up again by rain.
The project was delayed by rain in March, and again last week when it lost four work days to wet weather, on top of the 25 days lost earlier in the year.
The expected completion date has not changed, however.
The new road links State Highway 2 with Pakowhai Rd, providing an alternative route to Napier, particularly for heavy trucks.
"The move of the traffic on to the completed part of the new SH2 roundabout went well,"
a Hastings District Council spokeswoman said.