City crews are on scene of a broken water main on Cobourg St. near Tormey St. in Lowertown.

Reports started coming in at around 6:30 a.m. Thursday.

A large hole has opened in part of the street, forcing OC Transpo to detour buses and suspend service at stops along Cobourg.

The detours were lifted at around 11:30 a.m.

The City of Ottawa says lanes are reduced in the area.

It remains unclear when the road will fully reopen.