Ia 21 over Branch Salt Creek
GoodBenton County, Iowa · 0.3 Mi. S of Jct. SR E44 · Structure no. 000000000014421
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected November 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 1,470
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Ia 21 over Branch Salt Creek is a concrete continuous culvert carrying Ia 21 over Branch Salt Creek in Benton County, Iowa. It was built in 1983, so it is 42 years old, younger than the Iowa average of 45.5 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 1,470 vehicles a day, roughly 24% of them trucks, projected to reach 1,470 by 2044. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 16.2 mi (26 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ia 21 over Branch Salt Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is Ia 21 over Branch Salt Creek 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 November 2024.
How much traffic does Ia 21 over Branch Salt Creek carry?
About 1,470 vehicles per day (2022 count), of which roughly 24% are trucks.
How long is Ia 21 over Branch Salt Creek?
The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).
Who owns Ia 21 over Branch Salt Creek?
It is owned by the State Highway Agency.