County Road 120 over Mahan Creek
Chilton County, Alabama · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Road 120 over Mahan Creek in Chilton County, Alabama, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2008, making it 17 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2008).
- Its listed owner is the county highway agency.
- It is one of 94 of the 190 inventoried bridges in Chilton County rated good (49.5%); 2 (1.1%) 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 November 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 → (32.96327, -86.8303)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 9 | 9 | Excellent condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Concrete channel beam |
| Length | about 40 ft |
| Location | CR120 1M N.w.mars Hill Ch |
| NBI structure number | 020165 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Alabama department of transportation.
Busiest bridges in Chilton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-65 over Cobb Creek | 1960 | 48,128 | Fair |
| I-65 over Third Creek | 1960 | 48,128 | Fair |
| I-65 over Watson Creek | 1960 | 48,128 | Fair |
| I-65 over Turkey Creek | 1960 | 43,848 | Fair |
| I-65 over Yellow Leaf Creek (+) | 1989 | 43,848 | Good |
| I-65 over Walnut Creek (-) | 1957 | 42,705 | Fair |
All bridges nearby: Chilton County, AL bridge conditions · every bridge in Chilton County · Alabama bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.