I40 over I40 Rl /SR 840-rmp-nw&se
Dickson County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I40 over I40 Rl /SR 840-rmp-nw&se in Dickson County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2000, making it 25 years old at the 2025 inventory.
- It carries about 50,777 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 89 of the 242 inventoried bridges in Dickson County rated fair (36.8%); 12 (5.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 7 to 6.
- Its most recent inspection on record is dated April 2024, 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 → (36.02118, -87.26527)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 501 ft |
| Location | I40-sr840 In Dickson Co. |
| NBI structure number | 22I00400021 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| 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 Dickson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I40 over I40 Ll /SR 840-rmp-nw&se | 2000 | 50,777 | Fair |
| I40 over Piney River & Nfa A361 | 1963 | 34,978 | Fair |
| I40 over Piney River & Nfa A361 | 1963 | 34,978 | Fair |
| I40 over I40-rl / East Piney Rd. | 1963 | 34,978 | Poor |
| I40 over I40-ll / East Piney Rd. | 1963 | 34,978 | Poor |
| I40 over Nails Creek | 1962 | 34,028 | Good |
All bridges nearby: Dickson County, TN bridge conditions · every bridge in Dickson County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.