Crew members said they spotted the abnormally thin, weak dog on Sunnyside Drive and called the Lake County Office of Animal Services for help, WFTV-TV reported.
The dog was taken to the Lake County Animal Shelter, where she weighed in at 22 pounds.
Pit Sisters, a Jacksonville-based rescue agency, ensured that the dog received emergency care.
"I know we have a great group of employees, but this week, I found out we have a couple of heroes," Lori Koontz, the division's manager, said in a statement.
The dog, who has been nicknamed "Glory," is eating, drinking and slowly regaining strength.
Sweet "Glory" was saved by the heroic efforts of our Lake County Public Works Road Maintenance Ops crew on Tuesday. We are happy to report that she is eating, drinking and slowly gaining her strength back thanks to the work of our partners. Read more: ➡️https://t.co/lZgIpSnZ7Cpic.twitter.com/6J2UPFeiCV