US 45 over Old 45 Marion Road
Lauderdale County, Mississippi · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 45 over Old 45 Marion Road in Lauderdale County, Mississippi, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1973, making it 52 years old at the 2025 inventory.
- It carries about 11,000 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 206 of the 475 inventoried bridges in Lauderdale County rated fair (43.4%); 28 (5.9%) 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 March 2023, 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 → (32.43416, -88.64079)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Continuous concrete multiple box beam |
| Length | about 443 ft |
| Location | Int of Old New US 45 |
| NBI structure number | 210004503807910 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 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 Mississippi department of transportation.
Busiest bridges in Lauderdale County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 20/I 59 over Grand Ave | 1973 | 56,000 | Fair |
| I 20/I 59 over SR 145 | 1957 | 56,000 | Fair |
| I 20/I 59 over US 11 Norfolk S RR | 1974 | 49,000 | Fair |
| I 20/I 59 over Sowashee Creek | 1973 | 49,000 | Fair |
| I 20/I 59 over Kcs RR | 1973 | 48,000 | Fair |
| I 20/I 59 over Stream | 1949 | 41,000 | Good |
All bridges nearby: Lauderdale County, MS bridge conditions · every bridge in Lauderdale County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.