Modoc Point HWY427 over Williamson River
GoodKlamath County, Oregon · 5.6 MI S HWY 4 JCT · Structure no. 05478A427 00732
- Built
- 1982
- 43 years old
- Condition
- Good
- inspected March 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 220 ft
- 4 main spans
- Daily traffic
- 596
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Modoc Point HWY427 over Williamson River is a prestressed concrete slab carrying Modoc Point HWY427 over Williamson River in Klamath County, Oregon. It was built in 1982, so it is 43 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 596 vehicles a day, roughly 10% of them trucks, projected to reach 621 by 2025. The structure is 220 ft (67.1 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 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 | 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 Modoc Point HWY427 over Williamson River built?
It was built in 1982, making it 43 years old in 2025.
What condition is Modoc Point HWY427 over Williamson River 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 March 2023.
How much traffic does Modoc Point HWY427 over Williamson River carry?
About 596 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is Modoc Point HWY427 over Williamson River?
The structure is 220 ft (67.1 m) long with a longest span of 57 ft (17.4 m) and a deck 32 ft wide.
Who owns Modoc Point HWY427 over Williamson River?
It is owned by the County Highway Agency.