US101 (hwy 9) over Millport Slough
GoodLincoln County, Oregon · 006 MI S Kernville · Structure no. 20401 009 12084
- Built
- 2011
- 14 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 390 ft
- 4 main spans
- Daily traffic
- 11,636
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US101 (hwy 9) over Millport Slough is a prestressed concrete continuous stringer/multi-beam or girder carrying US101 (hwy 9) over Millport Slough in Lincoln County, Oregon. It was built in 2011, so it is 14 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 11,636 vehicles a day, roughly 4% of them trucks, projected to reach 13,100 by 2042. The structure is 390 ft (118.9 m) long and 75 ft wide. If it were closed, the detour would be 41.6 mi (67 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US101 (hwy 9) over Millport Slough built?
It was built in 2011, making it 14 years old in 2025.
What condition is US101 (hwy 9) over Millport Slough 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 June 2023.
How much traffic does US101 (hwy 9) over Millport Slough carry?
About 11,636 vehicles per day (2022 count), of which roughly 4% are trucks.
How long is US101 (hwy 9) over Millport Slough?
The structure is 390 ft (118.9 m) long with a longest span of 97 ft (29.7 m) and a deck 75 ft wide.
Who owns US101 (hwy 9) over Millport Slough?
It is owned by the State Highway Agency.