Richland ST over Maquoketa River
GoodDelaware County, Iowa · 015000500 · Structure no. 000000000004261
- Built
- 2005
- 20 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 246 ft
- 3 main spans
- Daily traffic
- 879
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Richland ST over Maquoketa River is a prestressed concrete stringer/multi-beam or girder carrying Richland ST over Maquoketa River in Delaware 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 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 879 vehicles a day, projected to reach 879 by 2043. The structure is 246 ft (75 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Richland ST over Maquoketa River built?
It was built in 2005, making it 20 years old in 2025.
What condition is Richland ST over Maquoketa 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 May 2023.
How much traffic does Richland ST over Maquoketa River carry?
About 879 vehicles per day (2022 count).
How long is Richland ST over Maquoketa River?
The structure is 246 ft (75 m) long with a longest span of 80 ft (24.4 m) and a deck 32 ft wide.
Who owns Richland ST over Maquoketa River?
It is owned by the County Highway Agency.