NB I-35 over Drainage Ditch #29
GoodWright County, Iowa · 1.3 MI N of JCT SR C70 · Structure no. 000000000602590
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 151 ft
- 3 main spans
- Daily traffic
- 8,250
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NB I-35 over Drainage Ditch #29 is a prestressed concrete stringer/multi-beam or girder carrying NB I-35 over Drainage Ditch #29 in Wright County, Iowa. It was built in 1974, so it is 51 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 8,250 vehicles a day, roughly 28% of them trucks, projected to reach 8,250 by 2043. The structure is 151 ft (46 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 | 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 NB I-35 over Drainage Ditch #29 built?
It was built in 1974, making it 51 years old in 2025.
What condition is NB I-35 over Drainage Ditch #29 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 2024.
How much traffic does NB I-35 over Drainage Ditch #29 carry?
About 8,250 vehicles per day (2023 count), of which roughly 28% are trucks.
How long is NB I-35 over Drainage Ditch #29?
The structure is 151 ft (46 m) long with a longest span of 52 ft (15.9 m) and a deck 43 ft wide.
Who owns NB I-35 over Drainage Ditch #29?
It is owned by the State Highway Agency.