While Tuesday started out with rainfall, INDOT crews readied for a heavy workload.
"They are making sure they are filled up with salt, probably been on the road for a while," said Matt Deitchley, INDOT spokesman.
Once the raindrops turn to snow, they know there is a big task at hand and the plows will be out around the clock.
"We'll also do things like shift schedules, so we can make sure 24 hours a day we can have people on the roads," Deitchley said. "We have 5000 lane miles that we cover."
There is one area that gets the spotlight among the thousands of miles.
"The bypass gets slick," Deitchley said. "We put double the attention on that road than we do on any other road in our district."
It is a roadway that has seen its fair share of accidents this season.
"It has higher traffic volume, people tend to drive faster," he said. "There are open spaces and those tend to ice up a little sooner."
The mix of freezing rain and snow makes for a tough plan of attack to keep streets clear.
"it has been a little tricky because, I'm sure as Mike Hoffman will tell you, the temperatures range whether it is a one degree or two degree change can make a huge difference in how we tackle the roads," Deitchley said.