Fm-Mahogany RD over Greybill Creek
FairPottawattamie County, Iowa · 076391301 · Structure no. 000000000287520
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete Continuous
- Length
- 103 ft
- 3 main spans
- Daily traffic
- 300
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Fm-Mahogany RD over Greybill Creek is a concrete continuous slab carrying Fm-Mahogany RD over Greybill Creek in Pottawattamie County, Iowa. It was built in 1961, so it is 64 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 300 vehicles a day, roughly 21% of them trucks, projected to reach 300 by 2043. The structure is 103 ft (31.4 m) long and 30 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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-Mahogany RD over Greybill Creek built?
It was built in 1961, making it 64 years old in 2025.
What condition is Fm-Mahogany RD over Greybill Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.
How much traffic does Fm-Mahogany RD over Greybill Creek carry?
About 300 vehicles per day (2022 count), of which roughly 21% are trucks.
How long is Fm-Mahogany RD over Greybill Creek?
The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.
Who owns Fm-Mahogany RD over Greybill Creek?
It is owned by the County Highway Agency.