City crews will fan out across Toronto on Monday in a ramped-up effort to fill up potholes.

About 100 workers will repair as many as possible over the next few weeks.

Between now and Friday, they are expected to patch as many as 20,000 craters, with each job taking a minimum of 15 minutes.

Director of Toronto Transportation Services, Peter Noehammer blames 2013's bumper crop of potholes on recent swings in temperatures.

He adds city crews do their best to fix potholes as soon as they are spotted but Transportation Services has been particularly busy solving snow-related issues over the past few weeks.

Over the last 3 years, the City of Toronto has repaired an average of 200,000 potholes per year.

The City spends approximately $4 million per year to fix potholes.

If you spot a particularly bad stretch, you can report it by calling 3-1-1, but Noehammer says the more precise you are about the location of the pothole you want fixed, the easier it will be for crews to find, which means it will be filled that much faster.

(with files from Dave Bradley)