US 97 (hwy 004) over California Ave
Klamath County, Oregon · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 97 (hwy 004) over California Ave in Klamath County, Oregon, 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 2004, making it 21 years old at the 2025 inventory.
- It carries about 9,958 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 98 of the 248 inventoried bridges in Klamath County rated good (39.5%); 11 (4.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: deck 7 to 8, superstructure 8 to 9, substructure 7 to 8.
- Its most recent inspection on record is dated March 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 → (42.22391, -121.79252)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 8 | Very good condition |
| Superstructure | 8 | 9 | Excellent condition |
| Substructure | 7 | 8 | Very good condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 500 ft |
| Location | 003 Mi N Hwy 20 Jct |
| NBI structure number | 19940 004 27473 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | March 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 Oregon department of transportation.
Busiest bridges in Klamath County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Or 140 (hwy 020) over Usrs Canal | 1930 | 20,461 | Fair |
| Or 140 (hwy 020) over Link River | 1931 | 19,357 | Fair |
| Or 140 (hwy 020) over City St & UPRR | 1957 | 19,357 | Fair |
| Shasta Way over A Canal | 1979 | 16,068 | Good |
| S Side Bypass over UPRR | 1986 | 11,928 | Fair |
| S Side Bypass over BNSF & Klamath River | 1986 | 11,850 | Good |
All bridges nearby: Klamath County, OR bridge conditions · every bridge in Klamath County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.