The City Street Department has the responsibility of maintaining over 1,000 signs in St. Marys. There are three different groups of signs throughout the City. These groups include:
- Regulatory Signs (stop, speed limit, one-way, no parking, etc.)
- Warning Signs (intersection ahead, watch children, curve, park entrances, etc.)
- Information Signs (street names, firehalls, etc.)
These signs are located on both City and State highways.