The man became trapped after a bridge collapsed on a property in the 3200 block of North Route 47 in unincorporated Woodstock, fire officials said.
The Woodstock Fire/Rescue District responded to the property just after 3 p.m. Sunday. The man was located partially submerged in water in a creek, but he was conscious, officials said.
The man became trapped in the water under a tractor after a wooden bridge collapsed. He was believed to be trapped for over 30 minutes before being rescued.
He was airlifted to a hospital in Libertyville for serious injuries from the crash and severe hypothermia due to water exposure, officials said.
No further information was immediately available.