B-15 over I-35
FairCerro Gordo County, Iowa · 2.9 Mi. S of Jct. Ia. 9 · Structure no. 000000000019270
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 293 ft
- 4 main spans
- Daily traffic
- 39
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
B-15 over I-35 is a steel continuous stringer/multi-beam or girder carrying B-15 over I-35 in Cerro Gordo County, Iowa. It was built in 1971, so it is 54 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 39 vehicles a day, projected to reach 39 by 2044. The structure is 293 ft (89.3 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was B-15 over I-35 built?
It was built in 1971, making it 54 years old in 2025.
What condition is B-15 over I-35 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 August 2024.
How much traffic does B-15 over I-35 carry?
About 39 vehicles per day (2022 count).
How long is B-15 over I-35?
The structure is 293 ft (89.3 m) long with a longest span of 94 ft (28.7 m) and a deck 33 ft wide.
Who owns B-15 over I-35?
It is owned by the State Highway Agency.