Officials say new pavement and windy conditions are believed to have contributed to two separate semi accidents near Roca.
Lancaster County Sheriff's Sergeant Tommy Trotter says both accidents happened on Highway 77 just north of the Highway 33 Interchange.
Trotter says says both accidents involved semi trucks heading north, when winds pushed on the vehicle just as it got on to new, rain covered asphalt.
According to Trotter, the first accident happened just before 9:30 p.m. Thursday. The semi lost control and ended up in the median, spilling about 150 gallons of diesel fuel from ruptured tanks. The accident blocked southbound traffic for nearly two hours.
The second crash happened just after 1 a.m. Friday within 50 yards of the scene of the first accident.
When the semi lost control, it jacknifed, crossed the median, ending up on the southbound shoulder and blocking both southbound lanes. The second accident kept the road closed for just over an hour.
Hickman fire crews tell us they had just gotten home after cleaning up the first accident, when they were called back to help with the second crash.
Trotter says no one was hurt in either accident.