300 ST over Tarkio Rvr
FairAtchison County, Missouri · S 4 T 63 N R 40 W · Structure no. 24072
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 186 ft
- 3 main spans
- Daily traffic
- 70
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
300 ST over Tarkio Rvr is a prestressed concrete continuous stringer/multi-beam or girder carrying 300 ST over Tarkio Rvr in Atchison County, Missouri. It was built in 1987, so it is 38 years old, younger than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 70 vehicles a day, roughly 10% of them trucks, projected to reach 81 by 2044. The structure is 186 ft (56.7 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 300 ST over Tarkio Rvr built?
It was built in 1987, making it 38 years old in 2025.
What condition is 300 ST over Tarkio Rvr 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 February 2024.
How much traffic does 300 ST over Tarkio Rvr carry?
About 70 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is 300 ST over Tarkio Rvr?
The structure is 186 ft (56.7 m) long with a longest span of 74 ft (22.6 m) and a deck 27 ft wide.
Who owns 300 ST over Tarkio Rvr?
It is owned by the County Highway Agency.