S.H. 18 over Lost Man Creek
Osage County, Oklahoma · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S.H. 18 over Lost Man Creek in Osage County, Oklahoma, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2013, making it 12 years old at the 2025 inventory.
- It carries about 660 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 135 of the 368 inventoried bridges in Osage County rated good (36.7%); 66 (17.9%) 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 August 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 → (36.70818, -96.67657)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 32 ft |
| Location | 1.6 Mi. N of U.S. 60 |
| NBI structure number | 298490000000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 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 Osage County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| N3934 (tisdale Ex) over Creek | 1987 | 12,200 | Fair |
| Tisdale Pkwy/ S-bd over Apache St. Under | 2001 | 12,000 | Fair |
| Tisdale Pkwy. N-bd over Apache St. Under | 2001 | 12,000 | Fair |
| Gilcrease Expwy over Creek | 2009 | 10,300 | Good |
| Gilcrease Expwy over Creek | 2009 | 10,300 | Good |
| U.S. 60 over Ark River & Co Rd Under | 1989 | 6,800 | Fair |
All bridges nearby: Osage County, OK bridge conditions · every bridge in Osage County · Oklahoma bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.