K120 over Wolf River
GoodDoniphan County, Kansas · 2.40 MI N K-20 · Structure no. 999912000220371
- Built
- 1985
- 40 years old
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 283 ft
- 3 main spans
- Daily traffic
- 382
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
K120 over Wolf River is a steel continuous stringer/multi-beam or girder carrying K120 over Wolf River in Doniphan County, Kansas. It was built in 1985, so it is 40 years old, younger than the Kansas average of 52.8 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 382 vehicles a day, roughly 9% of them trucks, projected to reach 390 by 2044. The structure is 283 ft (86.3 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was K120 over Wolf River built?
It was built in 1985, making it 40 years old in 2025.
What condition is K120 over Wolf River 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 June 2023.
How much traffic does K120 over Wolf River carry?
About 382 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is K120 over Wolf River?
The structure is 283 ft (86.3 m) long with a longest span of 120 ft (36.6 m) and a deck 30 ft wide.
Who owns K120 over Wolf River?
It is owned by the State Highway Agency.