Three workers were injured at the site of the Fix 50 construction zone late Wednesday morning, officials said. 
California Highway Patrol Officer Michael Bradley says that lumber was being carried through the site,  and the wood struck was by a passing semi-truck on eastbound Highway 50 near 16th Street. The 
As far as Bradley knows at this time, the semi-truck did not hit the concrete barrier at the scene. An investigation is still under way.
Three people were injured at the scene but Sac Metro Fire officials stated that just two people were transported to UC Davis Medical Center.  
One person had a minor head injury and was treated at the scene. 
Two workers were with Myers and Sons, headed by C.C. Myers, the third was with a separate contracting company, Dennis Keaton with Caltrans said. 
CHP is investigating the incident. Traffic is still able to get through the Fix 50 construction zone, which is in its second day of repair work. 
Stay tuned to NewsRadio KFBK and for updates on this developing story. 
Correction: An earlier version of the story stated that the truck hit a concrete barrier. That does not appear to be the case.