SR 77 over I-20
Greene County, Georgia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 77 over I-20 in Greene County, Georgia, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 1,470 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 12 of the 66 inventoried bridges in Greene County rated fair (18.2%); 0 (0.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 6 to 5.
- Its most recent inspection on record is dated May 2024, 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 → (33.54405, -83.0798)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 5 | Fair condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 289 ft |
| Location | In North Siloam |
| NBI structure number | 000000013300190 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Georgia department of transportation.
Busiest bridges in Greene County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-20 (wbl) over Richland Creek | 1968 | 143,000 | Good |
| I-20 Wbl over SR 15 | 1968 | 142,000 | Good |
| I-20 (ebl) over Richland Creek | 1968 | 34,400 | Good |
| I-20 over Beaverdam Creek | 1967 | 32,100 | Good |
| I-20 over Oliver Creek | 1967 | 32,100 | Good |
| I-20 over Bowden Creek | 1967 | 32,100 | Good |
All bridges nearby: Greene County, GA bridge conditions · every bridge in Greene County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.