106th Trail over I-29
GoodHarrison County, Iowa · 1.5 Mi. N of Jct. SR F-20 · Structure no. 000000000028400
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 219 ft
- 4 main spans
- Daily traffic
- 45
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
106th Trail over I-29 is a prestressed concrete stringer/multi-beam or girder carrying 106th Trail over I-29 in Harrison County, Iowa. It was built in 1966, so it is 59 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 45 vehicles a day, roughly 20% of them trucks, projected to reach 45 by 2044. The structure is 219 ft (66.8 m) long and 28 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 106th Trail over I-29 built?
It was built in 1966, making it 59 years old in 2025.
What condition is 106th Trail over I-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 May 2024.
How much traffic does 106th Trail over I-29 carry?
About 45 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is 106th Trail over I-29?
The structure is 219 ft (66.8 m) long with a longest span of 69 ft (21 m) and a deck 28 ft wide.
Who owns 106th Trail over I-29?
It is owned by the State Highway Agency.