A Sig Alert has been issued for State Route 67 at Slaughterhouse Canyon Road in Lakeside.
California Highway Patrol officials were diverting traffic in the area just before 6:30 a.m., but have since opened up the roadway.
At 6:45 a.m. CHP officials said the Sig Alert would remain in place for at least another 30 minutes as heavy traffic in the area continued.