I-95 NB over Lake Swamp
Florence County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-95 NB over Lake Swamp in Florence County, South Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1966, making it 59 years old at the 2025 inventory.
- It carries about 18,450 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 173 of the 275 inventoried bridges in Florence County rated fair (62.9%); 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.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (34.11729, -79.90415)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 149 ft |
| Location | 2MI SE of Timmonsville |
| NBI structure number | 000000000004766 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated 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.