Old Ia 77 over Richland Creek
PoorKeokuk County, Iowa · 074102210 · Structure no. 000000000032640
- Built
- 1932
- 93 years old, rebuilt 1960
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 183 ft
- 3 main spans
- Daily traffic
- 620
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Old Ia 77 over Richland Creek is a steel continuous stringer/multi-beam or girder carrying Old Ia 77 over Richland Creek in Keokuk County, Iowa. It was built in 1932 and reconstructed in 1960, so it is 93 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 620 vehicles a day, roughly 20% of them trucks, projected to reach 620 by 2044. The structure is 183 ft (55.8 m) long and 36 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 | 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 | 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 Old Ia 77 over Richland Creek built?
It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1960.
What condition is Old Ia 77 over Richland 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 Old Ia 77 over Richland Creek carry?
About 620 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is Old Ia 77 over Richland Creek?
The structure is 183 ft (55.8 m) long with a longest span of 71 ft (21.6 m) and a deck 36 ft wide.
Who owns Old Ia 77 over Richland Creek?
It is owned by the County Highway Agency.