SR 120 Wbl over Big Creek
Fulton County, Georgia · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 120 Wbl over Big Creek in Fulton 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 1979, making it 46 years old at the 2025 inventory.
- It carries about 3,960 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 258 of the 775 inventoried bridges in Fulton County rated fair (33.3%); 7 (0.9%) 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 September 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 → (34.0671, -84.25954)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 189 ft |
| Location | In Alpharetta |
| NBI structure number | 000000012100770 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Georgia department of transportation.
Busiest bridges in Fulton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-75 over Cs 3541 Bell Street | 1988 | 371,000 | Good |
| I-75 over SR 54 University Avenue | 1986 | 353,000 | Fair |
| I-75 over South River Trib. | 1964 | 349,000 | Fair |
| I-75 over CSX Railroad | 1954 | 349,000 | Good |
| I-75 over M-9053 Georgia Ave. | 1987 | 339,000 | Good |
| I-75 over M9184 Edwd- M9150 Aubu | 1988 | 339,000 | Good |
All bridges nearby: Fulton County, GA bridge conditions · every bridge in Fulton County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.