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Sumter, SC (WLTX) -- Two apparently separate tractor trailer incidents closed Highway 521 near Spencer Road in Sumter Friday morning,

According to Highway Patrol Trooper Billy Elder, the first truck was southbound on Highway 521 when it went off the left side of the roadway, struck a guardrail and overturned, blocking the southbound side.

The driver of the first truck, Erick McGrath of Greer, did not report any injuries.

A short time later a second truck was headed southbound on Highway 521, the driver observed truck number 1 blocking the lanes and so attempted to turn around. The truck got stuck midway through the turn and wound up blocking the northbound lanes.

Lanes reopened around midday.