SR 23 over N Prong St Marys River
Charlton County, Georgia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 23 over N Prong St Marys River in Charlton County, Georgia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1955, making it 70 years old at the 2025 inventory.
- It carries about 2,710 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 24 of the 71 inventoried bridges in Charlton County rated fair (33.8%); 1 (1.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (30.36217, -82.13432)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 219 ft |
| Location | at the Florida State Line |
| NBI structure number | 000000004900120 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Georgia department of transportation.
Busiest bridges in Charlton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 1 / SR 4 over Clay Branch | 1955 | 10,500 | Good |
| US 1 (nbl)/ SR 4 over Lake Deborah Trib. | 1954 | 8,900 | Fair |
| US 1 (nbl)/ SR 4 over Lake Deborah Trib. | 1955 | 8,900 | Fair |
| US 1 / SR 4 over Lake Deborah Trib. | 1954 | 8,900 | Good |
| US 1 (nbl) / SR 4 over Spanish Creek | 1947 | 6,650 | Good |
| US 1 (nbl) / SR 4 over Little Spanish Creek | 1947 | 6,070 | Good |
All bridges nearby: Charlton County, GA bridge conditions · every bridge in Charlton County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.