Sc 109 over Thompson Creek
Chesterfield County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sc 109 over Thompson Creek in Chesterfield County, South Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1940, making it 85 years old at the 2025 inventory.
- It carries about 1,650 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 118 of the 201 inventoried bridges in Chesterfield County rated fair (58.7%); 8 (4.0%) 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 November 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 → (34.80314, -80.21256)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 149 ft |
| Location | 2.1 Mi N of Mt Croghan |
| NBI structure number | 000000000001024 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 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 Chesterfield County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sc 9 over Thompson Creek | 1932 | 9,900 | Fair |
| Sc 151 over Fork Creek | 1931 | 9,300 | Fair |
| US 1 over Thompson Creek | 1931 | 8,800 | Fair |
| Sc 9 over Abrams Creek | 1932 | 8,600 | Good |
| Sc 9 over Spencer Mill Creek | 1975 | 8,600 | Fair |
| Sc 9 over Crews Branch | 1932 | 7,800 | Good |
All bridges nearby: Chesterfield County, SC bridge conditions · every bridge in Chesterfield County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.