Police and firefighters responded to 11 wrecks in less than two hours along Interstate 82 and Highway 14 Friday morning.
Wet roads glazed over with a thin layer of ice starting near the Coffin Road exit of Interstate 82 around 6 a.m. sending cars and trucks spinning.
Troopers responded to nine of the wrecks on Interstate 82-Highway 395 and two on Highway 14.
Two people were hurt in the crashes, said Washington State Patrol Trooper Chris Thorson.
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One of the worst of these happened at 6:37 a.m. when Steven J. Porter, 33, of Richland, slid off the interstate and rolled a Jeep Cherokee SUV, the Washington State Patrol said. He was taken to Trios Southridge Hospital.
The ice struck many by surprise after warmer weather in the Tri-Cities kept the wet roads from freezing.