The Granville Post of the State Highway Patrol says last night's back-up on Interstate 70 was caused by two separate accidents.

It happened around 8:45 p.m. in the eastbound lanes near Gratiot.

Dispatchers say a Hummer that was pulling a trailor lost control and went off the right side of the road, striking a guardrail.

The second accident involved two cars. Dispatchers say one of the drivers slowed down for the crashed Hummer but the other couldn't, causing it to crash...