A construction crew ruptured a small gas line on Michigan Avenue at the intersection with Washington Ave. at around 2:30 Friday afternoon.
Crews shut off gas and had it repaired in about an hour.
No nearby buildings were evacuated.
This is the second gas leak related to the project in just more than a week. A third leak in downtown Lansing Tuesday was linked to the sewer replacement project.
Friday, the mayor ordered the Michigan Ave. streetscape project halted until they can be sure maps indicating gas lines are correct. The City of Lansing's director of public service, Chad Gamble, says they are committed to making this project as easy as possible for downtown businesses.