Delaney Road SE over Mill Creek
Marion County, Oregon · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Delaney Road SE over Mill Creek in Marion County, Oregon, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1998, making it 27 years old at the 2025 inventory.
- It carries about 3,061 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 262 of the 375 inventoried bridges in Marion County rated fair (69.9%); 29 (7.7%) 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 7 to 8, superstructure 7 to 8.
- 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 → (44.84622, -122.96203)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 8 | Very good condition |
| Superstructure | 7 | 8 | Very good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete slab |
| Length | about 151 ft |
| Location | 024 E I-5 Jct |
| NBI structure number | 18237 18237 843 |
| 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) | 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 Marion County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Chemawa Road over I-5 (Hwy 1) | 1975 | 102,351 | Fair |
| Chemawa Road over UPRR & Indian School Rd | 1983 | 102,351 | Fair |
| Chemawa Rd over Ulali Drive | 2006 | 102,351 | Fair |
| I-5 (Hwy 1) over State Street | 2000 | 101,907 | Fair |
| I-5 (Hwy 1) over Mill Creek Oflow | 2008 | 101,907 | Fair |
| I-5 (Hwy 1) over Mill Creek Oflow | 2007 | 101,907 | Good |
All bridges nearby: Marion County, OR bridge conditions · every bridge in Marion County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.