I-95 NB over Lake Marion
Clarendon County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-95 NB over Lake Marion in Clarendon County, South Carolina, 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 1968, making it 57 years old at the 2025 inventory.
- It carries about 19,800 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 132 of the 170 inventoried bridges in Clarendon County rated fair (77.6%); 7 (4.1%) 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 October 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 → (33.50519, -80.45248)
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 | Continuous steel stringer or multi-beam girder |
| Length | about 4,500 ft |
| Location | 7MI S of Summerton |
| NBI structure number | 000000000005249 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.
Busiest bridges in Clarendon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 over Tawcaw Creek | 1967 | 35,400 | Fair |
| I-95 NB over Lake Marion Relief | 1968 | 19,800 | Fair |
| I-95 NB over US 15 | 1968 | 19,800 | Fair |
| I-95 SB over Lake Marion | 1968 | 19,800 | Fair |
| I-95 SB over Lake Marion Relief | 1968 | 19,800 | Fair |
| I-95 SB over US 15 | 1968 | 19,800 | Fair |
All bridges nearby: Clarendon County, SC bridge conditions · every bridge in Clarendon County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.