S.H. 30 over Salt Fork of Red River
Harmon County, Oklahoma · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S.H. 30 over Salt Fork of Red River in Harmon County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2018, making it 7 years old at the 2025 inventory.
- It carries about 412 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 80 of the 106 inventoried bridges in Harmon County rated good (75.5%); 1 (0.9%) 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 February 2023, 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 → (34.84322, -99.91256)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 1,000 ft |
| Location | 11.2 N Jct U.S. 62 |
| NBI structure number | 313650000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oklahoma department of transportation.
Busiest bridges in Harmon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. 62 over Creek | 1927 | 2,300 | Good |
| U.S. 62 over East Fork Sandy Creek | 1931 | 1,800 | Fair |
| U.S. 62 over Creek | 1931 | 1,700 | Good |
| U.S. 62 over Creek | 1931 | 1,700 | Good |
| U.S. 62 over Creek | 1931 | 1,700 | Good |
| U.S. 62 over Creek | 1932 | 1,600 | Good |
All bridges nearby: Harmon County, OK bridge conditions · every bridge in Harmon County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.