SR 99 over Turtle River Swamp
Glynn County, Georgia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 99 over Turtle River Swamp in Glynn County, Georgia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1966, making it 59 years old at the 2025 inventory.
- It carries about 3,460 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 28 of the 84 inventoried bridges in Glynn County rated fair (33.3%); 1 (1.2%) are rated poor.
- 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 → (31.21592, -81.66864)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 224 ft |
| Location | 1.5 Mi N of Jct SR 520 |
| NBI structure number | 000000012700370 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Georgia department of transportation.
Busiest bridges in Glynn County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 Nbl over SR 27 (US 25-us 341) | 1971 | 64,500 | Good |
| I-95 Nbl over M-621- Sou Rr- Scl RR | 1971 | 64,500 | Good |
| I-95 Nbl over SR 520 (US 17) | 1976 | 63,900 | Good |
| I-95 Nbl over Colonels Island-csx RR | 1976 | 63,900 | Good |
| I-95 Nbl over South Brunswick River | 1977 | 63,900 | Good |
| I-95 Nbl over SR 303 - Hillery Slough | 1977 | 63,900 | Good |
All bridges nearby: Glynn County, GA bridge conditions · every bridge in Glynn County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.