HWY 40 Capitol HWY over B-140 Semi-Viaduct
GoodMultnomah County, Oregon · Semiviaduct 1 W of Barbur · Structure no. 08550 040 00662
- Built
- 1959
- 66 years old
- Condition
- Good
- inspected September 2024
- Type
- Tee Beam
- Concrete
- Length
- 375 ft
- 15 main spans
- Daily traffic
- 21,309
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
HWY 40 Capitol HWY over B-140 Semi-Viaduct is a concrete tee beam carrying HWY 40 Capitol HWY over B-140 Semi-Viaduct in Multnomah County, Oregon. It was built in 1959, so it is 66 years old, older than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 21,309 vehicles a day, roughly 1% of them trucks, projected to reach 31,577 by 2025. The structure is 375 ft (114.3 m) long and 15 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was HWY 40 Capitol HWY over B-140 Semi-Viaduct built?
It was built in 1959, making it 66 years old in 2025.
What condition is HWY 40 Capitol HWY over B-140 Semi-Viaduct in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.
How much traffic does HWY 40 Capitol HWY over B-140 Semi-Viaduct carry?
About 21,309 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is HWY 40 Capitol HWY over B-140 Semi-Viaduct?
The structure is 375 ft (114.3 m) long with a longest span of 25 ft (7.6 m) and a deck 15 ft wide.
Who owns HWY 40 Capitol HWY over B-140 Semi-Viaduct?
It is owned by the City or Municipal Highway Agency.