70th ST over Dd No. 6
GoodFranklin County, Iowa · 090210801 · Structure no. 000000000156621
- Built
- 2005
- 20 years old
- Condition
- Good
- inspected June 2021
- Type
- Culvert
- Concrete
- Length
- 37 ft
- 2 main spans
- Daily traffic
- 570
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
70th ST over Dd No. 6 is a concrete culvert carrying 70th ST over Dd No. 6 in Franklin County, Iowa. It was built in 2005, so it is 20 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 570 vehicles a day, roughly 23% of them trucks, projected to reach 570 by 2043. The structure is 37 ft (11.3 m) long. 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 70th ST over Dd No. 6 built?
It was built in 2005, making it 20 years old in 2025.
What condition is 70th ST over Dd No. 6 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 2021.
How much traffic does 70th ST over Dd No. 6 carry?
About 570 vehicles per day (2022 count), of which roughly 23% are trucks.
How long is 70th ST over Dd No. 6?
The structure is 37 ft (11.3 m) long with a longest span of 17 ft (5.2 m).
Who owns 70th ST over Dd No. 6?
It is owned by the County Highway Agency.