S-17-174 over Mill Branch
Dillon County, South Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S-17-174 over Mill Branch in Dillon County, South Carolina, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1962, making it 63 years old at the 2025 inventory.
- It carries about 275 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 32 of the 129 inventoried bridges in Dillon County rated good (24.8%); 14 (10.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated fair in the 2024 inventory and is now good (deck 6 to 7, superstructure 6 to 7, substructure 7 to 8).
- Its most recent inspection on record is dated February 2025, 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 → (34.31036, -79.19281)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 7 | Good condition |
| Superstructure | 6 | 7 | Good condition |
| Substructure | 7 | 8 | Very good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 29 ft |
| Location | 2MI SW Lake View |
| NBI structure number | 000000000003853 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2025 |
| 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 Dillon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-95 NB over Great Pee Dee Swamp | 1966 | 23,150 | Fair |
| I-95 SB over Great Pee Dee Swamp | 1966 | 23,150 | Fair |
| I-95 NB over Brownsville Creek & Frtg | 1967 | 23,150 | Fair |
| I-95 NB over Poccosin Swamp | 1967 | 23,150 | Fair |
| I-95 SB over Brownsville Creek & Frtg | 1967 | 23,150 | Fair |
| I-95 SB over Poccosin Swamp | 1967 | 23,150 | Fair |
All bridges nearby: Dillon County, SC bridge conditions · every bridge in Dillon County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.