SR 99 over Round Island Creek
Limestone County, Alabama · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 99 over Round Island Creek in Limestone County, Alabama, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2006, making it 19 years old at the 2025 inventory.
- It carries about 7,960 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 142 of the 325 inventoried bridges in Limestone County rated good (43.7%); 7 (2.2%) are rated poor.
- 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 → (34.8225, -87.006)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 38 ft |
| Location | 3.6 M N Jct SR 99 & SR 3 |
| NBI structure number | 019296 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Alabama department of transportation.
Busiest bridges in Limestone County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 565 over Withers Spring Branch | 1988 | 53,280 | Fair |
| I 565 over Spring Creek | 1990 | 39,633 | Fair |
| I 565 over Piney Creek | 1990 | 39,633 | Fair |
| SR 2 over SR 3 | 1975 | 32,800 | Fair |
| SR 2 over Town Creek | 1956 | 31,750 | Fair |
| I 565 over Beaver Dam Creek | 1987 | 26,640 | Fair |
All bridges nearby: Limestone County, AL bridge conditions · every bridge in Limestone County · Alabama bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.