Plagman Road over Hamilton CR
GoodLinn County, Oregon · 001 MI S CR 20B · Structure no. 18963 720 00012
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 76 ft
- 1 main span
- Daily traffic
- 434
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Plagman Road over Hamilton CR is a prestressed concrete slab carrying Plagman Road over Hamilton CR in Linn County, Oregon. It was built in 2002, so it is 23 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 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 434 vehicles a day, roughly 10% of them trucks, projected to reach 566 by 2041. The structure is 76 ft (23.3 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 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. |
| 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 Plagman Road over Hamilton CR built?
It was built in 2002, making it 23 years old in 2025.
What condition is Plagman Road over Hamilton CR 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 Plagman Road over Hamilton CR carry?
About 434 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is Plagman Road over Hamilton CR?
The structure is 76 ft (23.3 m) long with a longest span of 75 ft (23 m) and a deck 32 ft wide.
Who owns Plagman Road over Hamilton CR?
It is owned by the County Highway Agency.