WB US 20 over Branch Plum Creek
FairDelaware County, Iowa · 5.0 Mi. E of Jct. Ia 38 · Structure no. 000000000023110
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 158 ft
- 3 main spans
- Daily traffic
- 4,850
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
WB US 20 over Branch Plum Creek is a prestressed concrete stringer/multi-beam or girder carrying WB US 20 over Branch Plum Creek in Delaware County, Iowa. It was built in 1963, so it is 62 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 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 4,850 vehicles a day, roughly 22% of them trucks, projected to reach 4,850 by 2044. The structure is 158 ft (48.2 m) long and 34 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 | 7 Good | Some minor problems. |
| 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 WB US 20 over Branch Plum Creek built?
It was built in 1963, making it 62 years old in 2025.
What condition is WB US 20 over Branch Plum 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 October 2024.
How much traffic does WB US 20 over Branch Plum Creek carry?
About 4,850 vehicles per day (2022 count), of which roughly 22% are trucks.
How long is WB US 20 over Branch Plum Creek?
The structure is 158 ft (48.2 m) long with a longest span of 52 ft (15.9 m) and a deck 34 ft wide.
Who owns WB US 20 over Branch Plum Creek?
It is owned by the State Highway Agency.