E Big Rock RD over Trib to Wapsipinicon Rvr
FairBlack Hawk County, Iowa · 89-11-03-01-10 · Structure no. 000000000075480
- Built
- 1920
- 105 years old, rebuilt 1969
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 49
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
E Big Rock RD over Trib to Wapsipinicon Rvr is a steel continuous stringer/multi-beam or girder carrying E Big Rock RD over Trib to Wapsipinicon Rvr in Black Hawk County, Iowa. It was built in 1920 and reconstructed in 1969, so it is 105 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. Its operating status is: open, would be posted or closed except for temporary shoring.
It carries about 49 vehicles a day, projected to reach 49 by 2044. The structure is 21 ft (6.4 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was E Big Rock RD over Trib to Wapsipinicon Rvr built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1969.
What condition is E Big Rock RD over Trib to Wapsipinicon Rvr 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 November 2024.
How much traffic does E Big Rock RD over Trib to Wapsipinicon Rvr carry?
About 49 vehicles per day (2022 count).
How long is E Big Rock RD over Trib to Wapsipinicon Rvr?
The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 24 ft wide.
Who owns E Big Rock RD over Trib to Wapsipinicon Rvr?
It is owned by the County Highway Agency.