CR 521 over Mud Creek Branch
Lee County, Mississippi · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR 521 over Mud Creek Branch in Lee 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 1960, making it 65 years old at the 2025 inventory.
- It carries about 119 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 121 of the 389 inventoried bridges in Lee County rated fair (31.1%); 18 (4.6%) are rated poor.
- Its traffic status in the 2025 inventory is open, temporary structure in place to carry legal loads while the original structure is closed awaiting replacement or rehabilitation (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, on a 12-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 → (34.37194, -88.72639)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 20 ft |
| Location | Sec 24 T 8S R 5E |
| NBI structure number | SA4100000000032 |
| Condition class | Fair |
| Traffic status (item 41) | Open, temporary structure in place to carry legal loads while the original structure is closed awaiting replacement or rehabilitation |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Mississippi department of transportation.
Busiest bridges in Lee County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 45 over Old Town Creek Relief | 1983 | 37,000 | Good |
| I 22 over Ditch | 1982 | 34,000 | Good |
| I 22 over Boguefala Creek | 1982 | 34,000 | Good |
| I 22 over Ditch | 1983 | 33,000 | Good |
| I 22 over West Tulip Creek | 1983 | 31,000 | Good |
| I 22 over Middle Tulip Creek | 1983 | 31,000 | Good |
All bridges nearby: Lee County, MS bridge conditions · every bridge in Lee County · Mississippi bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.