US 61 SB Ia 92 WB over 170th ST
GoodLouisa County, Iowa · At Jct. of SR 170 St. · Structure no. 000000000700255
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected January 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 192 ft
- 3 main spans
- Daily traffic
- 2,800
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 61 SB Ia 92 WB over 170th ST is a prestressed concrete stringer/multi-beam or girder carrying US 61 SB Ia 92 WB over 170th ST in Louisa 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 2,800 vehicles a day, roughly 19% of them trucks, projected to reach 2,800 by 2043. The structure is 192 ft (58.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 61 SB Ia 92 WB over 170th ST built?
It was built in 2017, making it 8 years old in 2025.
What condition is US 61 SB Ia 92 WB over 170th ST 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 January 2023.
How much traffic does US 61 SB Ia 92 WB over 170th ST carry?
About 2,800 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is US 61 SB Ia 92 WB over 170th ST?
The structure is 192 ft (58.5 m) long with a longest span of 69 ft (21 m) and a deck 43 ft wide.
Who owns US 61 SB Ia 92 WB over 170th ST?
It is owned by the State Highway Agency.