Both lanes of Winslow Way between Town & Country Market and Madison Avenue are now closed between 5 a.m. and 3 p.m. weekdays.
Traffic is being re-routed through the T&C parking lot to Bjune Drive.
The city has not specified when Winslow Way will re-open for weekday traffic.
The closure will enable work crews to start replacing a storm sewer main. Installation of the main will improve drainage on the south side of the street, where rain has caused puddling and seepage problems, according to the city.
“This re-routing of traffic is a decision that we take very seriously, and one which we believe will help us make up for lost time due to weather conditions,” project administrator Chris Wierzbicki said in a statement.
The south Winslow Way lane will is open after 3 p.m. and all day on weekends.
The city will open up 13 more parking spaces for public use at the City Hall parking lot on Monday to ease downtown parking problems.
For more information about the project, visit winslowstreetsmarts.com.
