100 South over Blacksmith Fork River
FairCache County, Utah · 290 W. 100 S. Millville · Structure no. 005010D
- Built
- 1930
- 95 years old, rebuilt 1950
- Condition
- Fair
- inspected May 2024
- Type
- Tee Beam
- Concrete
- Length
- 38 ft
- 1 main span
- Daily traffic
- 378
- 2014 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
100 South over Blacksmith Fork River is a concrete tee beam carrying 100 South over Blacksmith Fork River in Cache County, Utah. It was built in 1930 and reconstructed in 1950, so it is 95 years old, older 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 5 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 378 vehicles a day, roughly 10% of them trucks, projected to reach 459 by 2034. The structure is 38 ft (11.6 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 100 South over Blacksmith Fork River built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1950.
What condition is 100 South over Blacksmith Fork 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 May 2024.
How much traffic does 100 South over Blacksmith Fork River carry?
About 378 vehicles per day (2014 count), of which roughly 10% are trucks.
How long is 100 South over Blacksmith Fork River?
The structure is 38 ft (11.6 m) long with a longest span of 34 ft (10.4 m) and a deck 27 ft wide.
Who owns 100 South over Blacksmith Fork River?
It is owned by the City or Municipal Highway Agency.