US 378 over Br of Lynches Lake
Florence County, South Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 378 over Br of Lynches Lake in Florence County, South Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2006, making it 19 years old at the 2025 inventory.
- It carries about 5,900 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 92 of the 275 inventoried bridges in Florence County rated good (33.5%); 10 (3.6%) 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 2024, 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 → (33.88447, -79.86967)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 22 ft |
| Location | 7MI NW of Lake City |
| NBI structure number | 000000000000860 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.
Busiest bridges in Florence County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 over US 52&s-21-498&rr Csxt | 1966 | 57,700 | Fair |
| I-95 SB over I-20 EB | 1967 | 57,700 | Fair |
| I-95 over S-21-26 | 1966 | 54,300 | Fair |
| US 52 over Middle Swamp | 1927 | 35,600 | Fair |
| US 52 over Middle Swamp | 1927 | 35,600 | Fair |
| I-95 SB over S-21-13 | 1966 | 28,850 | Fair |
All bridges nearby: Florence County, SC bridge conditions · every bridge in Florence County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.