180th Street over Boyer River
GoodHarrison County, Iowa · 080421203 · Structure no. 000000000178611
- Built
- 2002
- 23 years old
- Condition
- Good
- inspected November 2022
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 246 ft
- 3 main spans
- Daily traffic
- 79
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
180th Street over Boyer River is a prestressed concrete stringer/multi-beam or girder carrying 180th Street over Boyer River in Harrison County, Iowa. It was built in 2002, so it is 23 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 79 vehicles a day, projected to reach 79 by 2043. The structure is 246 ft (75 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
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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 180th Street over Boyer River built?
It was built in 2002, making it 23 years old in 2025.
What condition is 180th Street over Boyer River 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 2022.
How much traffic does 180th Street over Boyer River carry?
About 79 vehicles per day (2022 count).
How long is 180th Street over Boyer River?
The structure is 246 ft (75 m) long with a longest span of 80 ft (24.4 m) and a deck 27 ft wide.
Who owns 180th Street over Boyer River?
It is owned by the County Highway Agency.