Local Road over Rock River
PoorLyon County, Iowa · 099451501 · Structure no. 000000000230010
- Built
- 1968
- 57 years old
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 252 ft
- 3 main spans
- Daily traffic
- 337
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Local Road over Rock River is a steel continuous stringer/multi-beam or girder carrying Local Road over Rock River in Lyon County, Iowa. It was built in 1968, so it is 57 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 337 vehicles a day, roughly 15% of them trucks, projected to reach 337 by 2044. The structure is 252 ft (76.8 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Local Road over Rock River built?
It was built in 1968, making it 57 years old in 2025.
What condition is Local Road over Rock River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.
How much traffic does Local Road over Rock River carry?
About 337 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is Local Road over Rock River?
The structure is 252 ft (76.8 m) long with a longest span of 98 ft (29.9 m) and a deck 30 ft wide.
Who owns Local Road over Rock River?
It is owned by the County Highway Agency.