ROSEMONT, Ill. (WLS) — A truck carrying corrosive material rolled over early Monday morning in Rosemont, blocking traffic, Illinois State Police said.

The truck rolled over just after 5:40 a.m. on the ramp from eastbound Interstate 90 to southbound Interstate 294, police said.

The ramp is shut down, and all eastbound traffic has been directed to southbound Mannheim Road.

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The driver was not seriously injured in the incident, police said.

The exact nature of the corrosive material has not yet been identified.

It was not immediately clear when the ramp would reopen.

This is a developing story; check back with ABC7 Chicago for updates.