I840 over I840-rl /carters CR. Rd
Williamson County, Tennessee · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I840 over I840-rl /carters CR. Rd in Williamson County, Tennessee, 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 2011, making it 14 years old at the 2025 inventory.
- It carries about 22,556 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 341 of the 531 inventoried bridges in Williamson County rated good (64.2%); 16 (3.0%) 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 May 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 → (35.81542, -86.98251)
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 | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 267 ft |
| Location | 8 Mi W Jct. I65&I840 |
| NBI structure number | 94SR8400037 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| 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 Tennessee department of transportation.
Busiest bridges in Williamson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I65 over I65 / Liberty Pike | 1997 | 138,787 | Good |
| I65 over Little Harpeth River | 1965 | 128,294 | Fair |
| I65 877478L over CSX Railroad | 1965 | 128,294 | Fair |
| I65 over CSX Railroad | 1965 | 128,294 | Fair |
| I65 over I65 / SR 252 | 1993 | 128,294 | Fair |
| I65 over Harpeth River | 2012 | 118,761 | Good |
All bridges nearby: Williamson County, TN bridge conditions · every bridge in Williamson County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.