Hwy 6 Frontage Rd over Grande Ronde River
Union County, Oregon · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Hwy 6 Frontage Rd over Grande Ronde River 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 1959, making it 66 years old at the 2025 inventory.
- It carries about 9 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- 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).
- It was rated fair in the 2024 inventory and is now good (deck 6 to 7, superstructure 6 to 7, substructure 6 to 7).
- Its most recent inspection on record is dated May 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 → (45.34735, -118.16681)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 7 | Good condition |
| Superstructure | 6 | 7 | Good condition |
| Substructure | 6 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete tee beam |
| Length | about 255 ft |
| Location | 3.4 Mi NW Lagrande |
| NBI structure number | 08427 006F25675 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| 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 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.