FM - 690th over Sevenmile Creek
PoorCass County, Iowa · 075351502 · Structure no. 000000000098231
- Built
- 1971
- 54 years old
- Condition
- Poor
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 154 ft
- 3 main spans
- Daily traffic
- 468
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM - 690th over Sevenmile Creek is a prestressed concrete stringer/multi-beam or girder carrying FM - 690th over Sevenmile Creek in Cass County, Iowa. It was built in 1971, so it is 54 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 468 vehicles a day, roughly 18% of them trucks, projected to reach 468 by 2044. The structure is 154 ft (46.9 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 - 690th over Sevenmile Creek built?
It was built in 1971, making it 54 years old in 2025.
What condition is FM - 690th over Sevenmile 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 February 2024.
How much traffic does FM - 690th over Sevenmile Creek carry?
About 468 vehicles per day (2022 count), of which roughly 18% are trucks.
How long is FM - 690th over Sevenmile Creek?
The structure is 154 ft (46.9 m) long with a longest span of 57 ft (17.4 m) and a deck 32 ft wide.
Who owns FM - 690th over Sevenmile Creek?
It is owned by the County Highway Agency.