Section Line ST over Little Rock River
GoodLyon County, Iowa · 100432502 · Structure no. 000000000007300
- Built
- 1951
- 74 years old, rebuilt 2009
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 182 ft
- 3 main spans
- Daily traffic
- 383
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Section Line ST over Little Rock River is a steel continuous stringer/multi-beam or girder carrying Section Line ST over Little Rock River in Lyon County, Iowa. It was built in 1951 and reconstructed in 2009, so it is 74 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 383 vehicles a day, roughly 23% of them trucks, projected to reach 383 by 2044. The structure is 182 ft (55.5 m) long and 33 ft wide. If it were closed, the detour would be 14.3 mi (23 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Section Line ST over Little Rock River built?
It was built in 1951, making it 74 years old in 2025. It was reconstructed in 2009.
What condition is Section Line ST over Little Rock 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 July 2024.
How much traffic does Section Line ST over Little Rock River carry?
About 383 vehicles per day (2022 count), of which roughly 23% are trucks.
How long is Section Line ST over Little Rock River?
The structure is 182 ft (55.5 m) long with a longest span of 70 ft (21.3 m) and a deck 33 ft wide.
Who owns Section Line ST over Little Rock River?
It is owned by the County Highway Agency and maintained by the City or Municipal Highway Agency.