Sc 31 over Sc 9
Horry County, South Carolina · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sc 31 over Sc 9 in Horry 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 2002, making it 23 years old at the 2025 inventory.
- It carries about 17,600 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 225 of the 480 inventoried bridges in Horry County rated good (46.9%); 24 (5.0%) 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 2024, 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 → (33.87567, -78.68221)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 230 ft |
| Location | 5 Mi N of Myrtle Beach |
| NBI structure number | 000000000009882 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
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.