US 301 over Savannah River
Allendale County, South Carolina · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 301 over Savannah River in Allendale County, South Carolina, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1965, making it 60 years old at the 2025 inventory.
- It carries about 1,300 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 9 of the 69 inventoried bridges in Allendale County rated poor (13.0%); 9 (13.0%) 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 May 2024, on a 12-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (32.93815, -81.50156)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 1,549 ft |
| Location | Ga/sc State Line |
| NBI structure number | 000000000004443 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the South Carolina department of transportation.
Busiest bridges in Allendale County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 278 over Duck Creek | 1922 | 6,200 | Fair |
| US 278 over Southern Railroad | 1961 | 3,500 | Fair |
| US 301 over Salkehatchie River Swamp | 1959 | 3,000 | Fair |
| US 301 over Salkehatchie River Swamp | 1959 | 3,000 | Fair |
| US 301 over Salkehatchie River | 1937 | 3,000 | Fair |
| US 278 over Log Creek | 1945 | 2,900 | Fair |
All bridges nearby: Allendale County, SC bridge conditions · every bridge in Allendale County · South Carolina bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.