Emergency crews responded to Park Street and Bartholomew Avenue in Hartford after a gas main was struck, fire officials said.
They responded just before 10:30 a.m. Thursday and found that a gas main had been struck at an outdoor construction site.
Connecticut Natural Gas was at the scene and Hartford Police blocked traffic, fire officials said.
No injuries were reported.
Get Connecticut local news, weather forecasts and entertainment stories to your inbox. Sign up for NBC Connecticut newsletters.
Sign up for our Breaking newsletter to get the most urgent news stories in your inbox.