C-26-740 over White Oak Swamp
Horry County, South Carolina · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- C-26-740 over White Oak Swamp in Horry County, South Carolina, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1991, making it 34 years old at the 2025 inventory.
- It carries about 250 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 24 of the 480 inventoried bridges in Horry County rated poor (5.0%); 24 (5.0%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- It was rated fair in the 2024 inventory and is now poor (deck 7 to 5, superstructure 7 to 5, substructure 6 to 3).
- Status change: newly closed since 2024.
- Its most recent inspection on record is dated December 2024, on a 12-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (33.98643, -78.94268)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 5 | Fair condition |
| Superstructure | 7 | 5 | Fair condition |
| Substructure | 6 | 3 | Serious condition |
Bridge details
| Structure | Concrete slab |
| Length | about 44 ft |
| Location | 5.5 Mi SW of Loris |
| NBI structure number | 000000000008454 |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 12 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 Horry County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 501 over Intercoastal Waterway | 1963 | 63,800 | Fair |
| US 501 Byp over U.S.701 | 1958 | 56,800 | Poor |
| US 501 Byp over Waccamaw River | 1958 | 56,800 | Poor |
| S-26-1315 over Grissom Parkway Tunnel | 2002 | 55,000 | Good |
| S-26-1315 over Sc 31 | 2002 | 55,000 | Good |
| S-26-1315 over L-6311 | 2002 | 55,000 | Good |
All bridges nearby: Horry County, SC bridge conditions · every bridge in Horry County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.