Long Prairie Rd over Trask River
Tillamook County, Oregon · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Long Prairie Rd over Trask River in Tillamook County, Oregon, 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 2008, making it 17 years old at the 2025 inventory.
- It carries about 2,440 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 68 of the 228 inventoried bridges in Tillamook County rated good (29.8%); 15 (6.6%) 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 June 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 → (45.44066, -123.77726)
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 | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 259 ft |
| Location | 03.5 Mi SE Tillamook |
| NBI structure number | 20306 734 00325 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
Busiest bridges in Tillamook County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US101 (Hwy 9) over Dougherty Slough | 2000 | 19,578 | Good |
| US101 (Hwy 9) over Hall Slough | 2000 | 19,261 | Good |
| US101 (Hwy 9) over POTB Railroad | 1931 | 13,357 | Fair |
| US101 (hwy 9) over Kilchis R. & Possetti Rd | 1952 | 13,357 | Poor |
| US101 (hwy 9) over Stasek Slough | 1952 | 13,357 | Fair |
| US101 (hwy 9) over Neilson Slough | 1952 | 13,357 | Fair |
All bridges nearby: Tillamook County, OR bridge conditions · every bridge in Tillamook County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.