K99 HWY over Neosho River
FairLyon County, Kansas · 0.31 MI N I35 · Structure no. 999909900561391
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 281 ft
- 4 main spans
- Daily traffic
- 1,724
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
K99 HWY over Neosho River is a prestressed concrete continuous stringer/multi-beam or girder carrying K99 HWY over Neosho River in Lyon 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 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 1,724 vehicles a day, roughly 16% of them trucks, projected to reach 1,759 by 2044. The structure is 281 ft (85.8 m) long and 42 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was K99 HWY over Neosho River built?
It was built in 1985, making it 40 years old in 2025.
What condition is K99 HWY over Neosho River 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 K99 HWY over Neosho River carry?
About 1,724 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is K99 HWY over Neosho River?
The structure is 281 ft (85.8 m) long with a longest span of 70 ft (21.3 m) and a deck 42 ft wide.
Who owns K99 HWY over Neosho River?
It is owned by the State Highway Agency.