By Jennifer McRae

LARIMER COUNTY, Colo. (CBS4)– Northbound lanes of Interstate 25 reopened just before 5 p.m. after they were closed for hours on Tuesday afternoon for a multi-vehicle crash that involved semis. The closure was northbound at mile marker 255 near Thompson River Ranch, south of Loveland.

Loveland Fire Authority says more than 17 vehicles were involved; three semi tractor trailers, five large vehicles and multiple small passenger vehicles.

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(credit: CSP Larimer County)

The anticipated closure was expected to be at least 4 hours. What caused the crash is being investigated, but it was snowing at the time and some roads were reportedly slick and icy in spots.

(credit: CSP Larimer County)

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Six people were taken to the hospital. No fatalities according to the Colorado State Patrol.

(credit: CBS)

Some southbound lanes were closed during the crash investigation and cleanup.

Jennifer McRae