100 TH over Small
FairGreene County, Iowa · 085320401 · Structure no. 000000000163311
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 21 ft
- 1 main span
- Daily traffic
- 45
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
100 TH over Small is a steel stringer/multi-beam or girder carrying 100 TH over Small in Greene County, Iowa. It was built in 1978, so it is 47 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 45 vehicles a day, projected to reach 45 by 2043. The structure is 21 ft (6.4 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 100 TH over Small built?
It was built in 1978, making it 47 years old in 2025.
What condition is 100 TH over Small in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does 100 TH over Small carry?
About 45 vehicles per day (2022 count).
How long is 100 TH over Small?
The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 23 ft wide.
Who owns 100 TH over Small?
It is owned by the County Highway Agency.