CO S-13 over I-35
FairFranklin County, Iowa · 5.2 Mi. N of Jct. SR C70 · Structure no. 000000000602425
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 314 ft
- 4 main spans
- Daily traffic
- 393
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
CO S-13 over I-35 is a steel continuous stringer/multi-beam or girder carrying CO S-13 over I-35 in Franklin County, Iowa. It was built in 1972, so it is 53 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 393 vehicles a day, roughly 26% of them trucks, projected to reach 393 by 2044. The structure is 314 ft (95.7 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 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 CO S-13 over I-35 built?
It was built in 1972, making it 53 years old in 2025.
What condition is CO S-13 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 June 2024.
How much traffic does CO S-13 over I-35 carry?
About 393 vehicles per day (2022 count), of which roughly 26% are trucks.
How long is CO S-13 over I-35?
The structure is 314 ft (95.7 m) long with a longest span of 100 ft (30.5 m) and a deck 33 ft wide.
Who owns CO S-13 over I-35?
It is owned by the State Highway Agency.