Smyrna-powder Spri over Nickajack Creek
Cobb County, Georgia · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Smyrna-powder Spri over Nickajack Creek in Cobb County, Georgia, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2010, making it 15 years old at the 2025 inventory.
- It carries about 5,910 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 369 of the 414 inventoried bridges in Cobb County rated good (89.1%); 0 (0.0%) 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 August 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (33.88931, -84.54829)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 111 ft |
| Location | West of Smyrna |
| NBI structure number | 000000006752770 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 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 Cobb County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-75 (nbl) over M-9495 Terrell Mill Rd | 1965 | 325,000 | Good |
| I-75 over Poorhouse Creek | 1965 | 325,000 | Good |
| I-75 over Rottenwood Creek | 1965 | 263,000 | Good |
| I-75- Rmps- CR2038 over Poplar Creek | 1963 | 262,000 | Good |
| I-75 over CR 1043 Banberry Road | 1965 | 236,000 | Fair |
| I-75 over Roswell Road | 1967 | 236,000 | Good |
All bridges nearby: Cobb County, GA bridge conditions · every bridge in Cobb County · Georgia bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.