SW 56th Ave over B-70 over Fanno Creek
FairMultnomah County, Oregon · N of HWY 10 · Structure no. 25B70 000 00000
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 27 ft
- 1 main span
- Daily traffic
- 404
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
SW 56th Ave over B-70 over Fanno Creek is a prestressed concrete slab carrying SW 56th Ave over B-70 over Fanno Creek in Multnomah County, Oregon. It was built in 1980, so it is 45 years old, younger than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 404 vehicles a day, roughly 1% of them trucks, projected to reach 446 by 2025. The structure is 27 ft (8.2 m) long and 40 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SW 56th Ave over B-70 over Fanno Creek built?
It was built in 1980, making it 45 years old in 2025.
What condition is SW 56th Ave over B-70 over Fanno Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.
How much traffic does SW 56th Ave over B-70 over Fanno Creek carry?
About 404 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is SW 56th Ave over B-70 over Fanno Creek?
The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 40 ft wide.
Who owns SW 56th Ave over B-70 over Fanno Creek?
It is owned by the City or Municipal Highway Agency.