US-89 (SR-89) over Logan River
FairCache County, Utah · At Mouth of Logan Canyon · Structure no. 0F 729
- Built
- 2005
- 20 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 108 ft
- 1 main span
- Daily traffic
- 5,254
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
US-89 (SR-89) over Logan River is a prestressed concrete stringer/multi-beam or girder carrying US-89 (SR-89) over Logan River in Cache County, Utah. It was built in 2005, so it is 20 years old, younger than the Utah average of 40.1 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 5,254 vehicles a day, roughly 37% of them trucks, projected to reach 6,305 by 2041. The structure is 108 ft (32.9 m) long and 59 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-89 (SR-89) over Logan River built?
It was built in 2005, making it 20 years old in 2025.
What condition is US-89 (SR-89) over Logan River 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 July 2023.
How much traffic does US-89 (SR-89) over Logan River carry?
About 5,254 vehicles per day (2021 count), of which roughly 37% are trucks.
How long is US-89 (SR-89) over Logan River?
The structure is 108 ft (32.9 m) long with a longest span of 106 ft (32.3 m) and a deck 59 ft wide.
Who owns US-89 (SR-89) over Logan River?
It is owned by the State Highway Agency.