CO RD Z 36 over US 30
GoodClinton County, Iowa · At Jct. S.R. Z36 · Structure no. 000000000021190
- Built
- 1969
- 56 years old
- Condition
- Good
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 216 ft
- 4 main spans
- Daily traffic
- 1,660
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
CO RD Z 36 over US 30 is a prestressed concrete stringer/multi-beam or girder carrying CO RD Z 36 over US 30 in Clinton County, Iowa. It was built in 1969, so it is 56 years old, older 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 1,660 vehicles a day, roughly 8% of them trucks, projected to reach 1,660 by 2044. The structure is 216 ft (65.8 m) long and 35 ft wide.
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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CO RD Z 36 over US 30 built?
It was built in 1969, making it 56 years old in 2025.
What condition is CO RD Z 36 over US 30 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 December 2024.
How much traffic does CO RD Z 36 over US 30 carry?
About 1,660 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is CO RD Z 36 over US 30?
The structure is 216 ft (65.8 m) long with a longest span of 65 ft (19.8 m) and a deck 35 ft wide.
Who owns CO RD Z 36 over US 30?
It is owned by the State Highway Agency.