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SACRAMENTO, Calif. (KTXL) –  A Caltrans subcontractor was killed Monday evening on Highway 99 in a traffic accident, a Caltrans representative told FOX40. 

Gilbert Mohtes-Chan, the Caltrans public information officer, said the incident happened as they prepared for overnight work on the highway. 

The California Highway Patrol said 47-year-old Troy Jacob Lohuis, an employee with Highway Specialty Company out of North Highlands, was placing a construction sign on the right shoulder of Highway 99 just south of Martin Luther King Jr. Boulevard when he was hit.

Lohuis was hit by an unknown vehicle while walking northbound toward his vehicle on the right shoulder, the CHP said. The vehicle that hit Lohuis could be a 2015-2018 Ford F-150.

At 9:55 p.m., Caltrans tweeted that the northbound, far-right lane of Highway 99 was closed near Martin Luther King Jr Boulevard due to an accident. 

All lanes reopened at 2 a.m. Tuesday, Caltrans said. 

Anyone who may have witnessed the collision is asked to contact South Sacramento CHP at 916-897-5600.

This is a developing story. Check back for updates.