SB I-380 over Poyner Creek
FairBlack Hawk County, Iowa · 0.2 Mi. N of Jct. SR V49 · Structure no. 000000000605230
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected January 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 163 ft
- 3 main spans
- Daily traffic
- 13,450
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
SB I-380 over Poyner Creek is a prestressed concrete stringer/multi-beam or girder carrying SB I-380 over Poyner Creek in Black Hawk County, Iowa. It was built in 1983, so it is 42 years old, younger 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 6 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 13,450 vehicles a day, roughly 23% of them trucks, projected to reach 13,450 by 2043. The structure is 163 ft (49.7 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SB I-380 over Poyner Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is SB I-380 over Poyner 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 January 2023.
How much traffic does SB I-380 over Poyner Creek carry?
About 13,450 vehicles per day (2022 count), of which roughly 23% are trucks.
How long is SB I-380 over Poyner Creek?
The structure is 163 ft (49.7 m) long with a longest span of 56 ft (17.1 m) and a deck 43 ft wide.
Who owns SB I-380 over Poyner Creek?
It is owned by the State Highway Agency.