S-21-72 over High Hill Branch
Florence County, South Carolina · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S-21-72 over High Hill Branch in Florence County, South Carolina, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 475 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 posted for load (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 5 to 6, superstructure 5 to 6.
- Its most recent inspection on record is dated April 2024, 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 → (33.92806, -79.72556)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 6 | Satisfactory condition |
| Superstructure | 5 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete slab |
| Length | about 44 ft |
| Location | 1.5 Mi NE Scranton |
| NBI structure number | 000000000005522 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | April 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.