Construction on High Street in New Albany was expected to start June 3.
The city is reconstructing High Street from Eagle's Villa Pizza north to Chatham Green Drive, adding street lights, street trees, sidewalks and ADA-compliant brick curbs.
The improvements are similar to those still being completed on Main Street, said city spokesman Scott McAfee.
At least one lane will remain open during construction, McAfee said.
The city will install a new turn lane at the south entrance to the New Albany 2-5 elementary and add 8-foot parking lanes on both sides of High Street.
Sidewalks will be built on the east side of High Street, which will require the road alignment to shift west, McAfee said.
"We're starting after school so traffic won't be an issue, and we hope the road construction will be substantially complete by the end of year, before the start of the school year," McAfee said.
The $1.1 million project is being paid for with a $273,873 grant and an $826,017 loan from the Ohio Public Works Commission.
The city extended the road construction farther north than originally planned and is burying utility lines in the area, which is expected to add another $800,000 to the project, McAfee said.
The city started burying utility lines when it began the Main Street reconstruction last year.
McAfee said utility poles on Main Street should disappear by July 1 and all poles on High Street between Main Street and Chatham Green should be gone by late November.
The city is finishing the Main Street project this year.
Crews widened Main Street between High and Third streets, adding a turn lane and on-street parking, street lights, sidewalks and ADA-compliant brick curbs.
Main Street improvements cost $1.8 million. The city received $350,000 in grants from the Ohio Public Works Commission and interest-free loans for the project.