By Jenna Dooley 
WNIJ News

Don’t be alarmed if you see massive wind turbines fall like giant trees along one of the busiest roads in northern Illinois.

There are dozens of wind turbines along Interstate 39 in Lee County, and the Paw Paw Fire Protection District wants drivers to know it’s no cause for panic when they start to come down.

The Mendota Hills Wind Farm, built in 2003, was the first utility-scale wind farm in the state of Illinois.

A company spokesman says a major upgrade is underway, and 63 wind turbines will come down over the next two to three months.

Some parts may be on the ground for some time. They will be replaced by fewer but larger turbines in coming months.