Fly Ridge Road over Grande Ronde R.
Union County, Oregon · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fly Ridge Road over Grande Ronde R. in Union 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 1987, making it 38 years old at the 2025 inventory.
- It carries about 20 vehicles a day (traffic count year 2001).
- It is one of 76 of the 169 inventoried bridges in Union County rated good (45.0%); 8 (4.7%) 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 2021, on a 48-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 → (45.15896, -118.3804)
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 | Prestressed concrete stringer or multi-beam girder |
| Length | about 58 ft |
| Location | No Data Entered |
| NBI structure number | 061606000001092 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2021 |
| Inspection interval (item 91) | 48 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 Oregon department of transportation.
Busiest bridges in Union County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-84 (hwy 006) over Ladd Creek(second Xing) | 2019 | 12,684 | Good |
| I-84 (hwy 006) over Ladd Creek Intch | 2019 | 12,684 | Good |
| I-84 (hwy 006) over Five Points Crk | 1960 | 12,564 | Fair |
| I-84 (hwy 006) over Hamilton Creek | 1960 | 12,538 | Fair |
| I-84 (hwy 006) over UPRR & Hwy 006 Bp | 1957 | 12,102 | Fair |
| I-84 (hwy 006) over Glover I/c (spring CR) | 1957 | 12,102 | Fair |
All bridges nearby: Union County, OR bridge conditions · every bridge in Union County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.