DOUGLAS COUNTY, Colo. -- Eastbound C-470 was closed for about 45 minutes in Douglas County because of two separate crashes on Monday morning, the Colorado State Patrol said.
One chain-reaction crash involved six vehicles and left one rolled on its side on the highway just west of Quebec Street.
It happened in a construction zone about 6:30 a.m., the Colorado Department of Transportation said.
A school bus was stopped behind the crash scene but was not involved, the Colorado State Patrol said.
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It's not known if anyone was injured or what led to the crashes.
One lane of traffic reopened at 7:15 a.m. and the second lane of traffic reopened at 7:45 a.m.