Northeast 12TH Ave over Lake Lytle
Tillamook County, Oregon · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Northeast 12TH Ave over Lake Lytle in Tillamook County, Oregon, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1973, making it 52 years old at the 2025 inventory.
- It carries about 647 vehicles a day (traffic count year 2020).
- Its listed owner is a city or municipal highway agency.
- It is one of 145 of the 228 inventoried bridges in Tillamook County rated fair (63.6%); 15 (6.6%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 5 to 6, superstructure 5 to 6.
- Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (45.62757, -123.93898)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 6 | Satisfactory condition |
| Superstructure | 5 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 30 ft |
| Location | 12TH St N End Lake Lytle |
| NBI structure number | 57C18 586 00020 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
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.