WB US 20 over SR T55
GoodGrundy County, Iowa · At Junction With SR T55 · Structure no. 000000000607265
- Built
- 2000
- 25 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 177 ft
- 3 main spans
- Daily traffic
- 6,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
WB US 20 over SR T55 is a prestressed concrete stringer/multi-beam or girder carrying WB US 20 over SR T55 in Grundy County, Iowa. It was built in 2000, so it is 25 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 6,500 vehicles a day, roughly 22% of them trucks, projected to reach 6,500 by 2044. The structure is 177 ft (54 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was WB US 20 over SR T55 built?
It was built in 2000, making it 25 years old in 2025.
What condition is WB US 20 over SR T55 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.
How much traffic does WB US 20 over SR T55 carry?
About 6,500 vehicles per day (2022 count), of which roughly 22% are trucks.
How long is WB US 20 over SR T55?
The structure is 177 ft (54 m) long with a longest span of 92 ft (28 m) and a deck 55 ft wide.
Who owns WB US 20 over SR T55?
It is owned by the State Highway Agency.