The driver of a Sumter Utilities truck that fell off the Arthur Ravenel Jr. Bridge last week was ticketed for driving an unsafe vehicle, the Charleston Police Department said.

Ronald Anthony Garvin, 38, of Semaht Street on James Island was driving the Freightliner truck after 3 p.m. May 15 when a boom jutting from its side caught the Meeting Street exit sign on southbound U.S. Highway 17, the police said.

The truck hit a concrete wall and tumbled off the edge to the ground 36 feet below. The mangled sign was dislodged and fell with it, but the overpass’s structure remained sound.

Garvin and his passenger, 41-year-old Matthew Wayne Fluharty of Vista Drive in Ladson, were seriously injured. S.C. Electric & Gas said the crew had been contracted to do work for the company, but it didn’t specify the job.

Police spokesman Charles Francis said this morning that investigators issued Garvin a citation because the truck’s boom hadn’t been secured.

Reach Andrew Knapp at 937-5414 or twitter.com/offlede.