FM - Boston over Crooked Creek
PoorPosted for loadCass County, Iowa · 077340701 · Structure no. 000000000100260
- Built
- 1950
- 75 years old
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 154 ft
- 3 main spans
- Daily traffic
- 29
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM - Boston over Crooked Creek is a steel continuous stringer/multi-beam or girder carrying FM - Boston over Crooked Creek in Cass County, Iowa. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.
It carries about 29 vehicles a day, projected to reach 29 by 2044. The structure is 154 ft (46.9 m) long and 22 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 FM - Boston over Crooked Creek built?
It was built in 1950, making it 75 years old in 2025.
What condition is FM - Boston over Crooked 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 - Boston over Crooked Creek carry?
About 29 vehicles per day (2022 count).
How long is FM - Boston over Crooked Creek?
The structure is 154 ft (46.9 m) long with a longest span of 59 ft (18 m) and a deck 22 ft wide.
Who owns FM - Boston over Crooked Creek?
It is owned by the County Highway Agency.