Or 224 (hwy 171) over Rock Creek
Clackamas County, Oregon · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Or 224 (hwy 171) over Rock Creek in Clackamas 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 1985 and reconstructed in 2005, making it 40 years old at the 2025 inventory.
- It carries about 20,132 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 113 of the 367 inventoried bridges in Clackamas County rated good (30.8%); 17 (4.6%) 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 August 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (45.40969, -122.50652)
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 193 ft |
| Location | 3.2 M E of Hwy 64 |
| NBI structure number | 01439B171 00813 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Oregon department of transportation.
Busiest bridges in Clackamas County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Barlow Trail Rd over Hackett Creek | 1965 | 165,900 | Fair |
| Hwy 001 over Willamette River | 1953 | 127,233 | Fair |
| Boones Ferry Road over I-5 (Hwy 1) | 1971 | 127,233 | Fair |
| Strawberry Lane over Hwy 064 | 1962 | 113,512 | Good |
| Boeckman Road over I-5 (hwy 001) | 1969 | 110,869 | Fair |
| Hwy 064 over Main St | 1972 | 108,786 | Fair |
All bridges nearby: Clackamas County, OR bridge conditions · every bridge in Clackamas County · Oregon bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.