Three construction workers were killed Tuesday morning in a crash that occurred in York County, on I-83 south near Exit 35. Investigators say that a box truck, driven by a 24-year-old man, barreled thru the construction site during an active work period. The crash caused the box truck to strike the three workers on the shoulder of the road. Police say the three were pronounced dead at the scene. Authorities are reminding drivers to take extra caution and follow the speed limits in active work zones.