FM - 690th over Troublesome Creek
PoorCass County, Iowa · 077351502 · Structure no. 000000000100740
- Built
- 1960
- 65 years old
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 170 ft
- 3 main spans
- Daily traffic
- 210
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM - 690th over Troublesome Creek is a prestressed concrete stringer/multi-beam or girder carrying FM - 690th over Troublesome Creek in Cass County, Iowa. It was built in 1960, so it is 65 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 3 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 210 vehicles a day, roughly 6% of them trucks, projected to reach 210 by 2044. The structure is 170 ft (51.8 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 FM - 690th over Troublesome Creek built?
It was built in 1960, making it 65 years old in 2025.
What condition is FM - 690th over Troublesome Creek 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 March 2024.
How much traffic does FM - 690th over Troublesome Creek carry?
About 210 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is FM - 690th over Troublesome Creek?
The structure is 170 ft (51.8 m) long with a longest span of 56 ft (17.1 m) and a deck 28 ft wide.
Who owns FM - 690th over Troublesome Creek?
It is owned by the County Highway Agency.