US 20 Frontage RD over Fall River Overflow
PoorFremont County, Idaho · 1.5 N. 3.7 E. ST Anthony · Structure no. 000000000032245
- Built
- 1932
- 93 years old
- Condition
- Poor
- inspected October 2024
- Type
- Frame
- Concrete
- Length
- 24 ft
- 1 main span
- Daily traffic
- 10
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
US 20 Frontage RD over Fall River Overflow is a concrete frame carrying US 20 Frontage RD over Fall River Overflow in Fremont County, Idaho. It was built in 1932, so it is 93 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 15 by 2039. The structure is 24 ft (7.3 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 Frontage RD over Fall River Overflow built?
It was built in 1932, making it 93 years old in 2025.
What condition is US 20 Frontage RD over Fall River Overflow in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.
How much traffic does US 20 Frontage RD over Fall River Overflow carry?
About 10 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 20 Frontage RD over Fall River Overflow?
The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 30 ft wide.
Who owns US 20 Frontage RD over Fall River Overflow?
It is owned by the County Highway Agency.