A stretch of Rideau Street was closed to traffic Sunday after a construction work created a small hole near where a much larger hole swallowed the street this summer.

This is where the Rideau Street sinkhole opened in early June. The cause has not been determined and/or released. <a href="https://t.co/D4b2uN17Db">pic.twitter.com/D4b2uN17Db</a> —@amkfoote

As of 4 p.m., Rideau was closed to motor vehicles from Sussex Drive to Dalhousie Street after the hole appeared during construction work, said acting Staff Sgt. John Gibbons with the Ottawa Police Service.

"While in the midst of construction, a small sinkhole appeared on Rideau Street," Gibbons said in a statement.

"As a precaution, Rideau Street is presently shut down."

The sidewalk remained opened to pedestrians and OC Transpo buses were being rerouted to the Mackenzie King Bridge on the other side of the Rideau Centre, Gibbons said.

Rideau-Vanier Coun. Mathieu Fleury said on Twitter Sunday afternoon that "jet grouting" work opened a hole two feet deep and one foot wide, causing the street closure.

OC Transpo says buses will be back on Rideau Street at 6 a.m. Monday morning.

Here is a look at the extent of the hole, around one of bore holes, on <a href="https://twitter.com/hashtag/Rideaustreet?src=hash">#Rideaustreet</a> , crews are pouring concrete to repair. <a href="https://twitter.com/hashtag/ottnews?src=hash">#ottnews</a> <a href="https://t.co/XBgCN6IWVv">pic.twitter.com/XBgCN6IWVv</a> —@MathieuFleury

In June, a massive sinkhole swallowed a portion of Rideau Street not far from the city's ongoing light rail construction site, causing a gas leak and forcing the evacuation of all nearby businesses.

Rideau Street has been closed to all vehicles but buses, taxis and delivery vehicles since August 2015 for construction.

It was set to close nightly to all vehicles for light rail construction work on Monday until early December.