A16 500th ST over Union Slough Ditch
GoodKossuth County, Iowa · 100281501 · Structure no. 000000000217471
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Concrete Continuous
- Length
- 111 ft
- 3 main spans
- Daily traffic
- 150
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
A16 500th ST over Union Slough Ditch is a concrete continuous slab carrying A16 500th ST over Union Slough Ditch in Kossuth County, Iowa. It was built in 2017, so it is 8 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 150 vehicles a day, roughly 27% of them trucks, projected to reach 150 by 2043. The structure is 111 ft (33.9 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was A16 500th ST over Union Slough Ditch built?
It was built in 2017, making it 8 years old in 2025.
What condition is A16 500th ST over Union Slough Ditch 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 June 2023.
How much traffic does A16 500th ST over Union Slough Ditch carry?
About 150 vehicles per day (2021 count), of which roughly 27% are trucks.
How long is A16 500th ST over Union Slough Ditch?
The structure is 111 ft (33.9 m) long with a longest span of 43 ft (13.1 m) and a deck 33 ft wide.
Who owns A16 500th ST over Union Slough Ditch?
It is owned by the County Highway Agency.