Tower Terrace WB over I 380
GoodLinn County, Iowa · 2.4 Mi. S Jct. SR E34 · Structure no. 000000000701060
- Built
- 2022
- 3 years old
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 295 ft
- 2 main spans
- Daily traffic
- 885
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Tower Terrace WB over I 380 is a prestressed concrete stringer/multi-beam or girder carrying Tower Terrace WB over I 380 in Linn County, Iowa. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 885 vehicles a day, projected to reach 885 by 2042. The structure is 295 ft (89.9 m) long and 68 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Tower Terrace WB over I 380 built?
It was built in 2022, making it 3 years old in 2025.
What condition is Tower Terrace WB over I 380 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 September 2024.
How much traffic does Tower Terrace WB over I 380 carry?
About 885 vehicles per day (2022 count).
How long is Tower Terrace WB over I 380?
The structure is 295 ft (89.9 m) long with a longest span of 146 ft (44.5 m) and a deck 68 ft wide.
Who owns Tower Terrace WB over I 380?
It is owned by the State Highway Agency.