420 TH Road over Br of Thrid Fk
FairPosted for loadGentry County, Missouri · S 15 T 61 N R 33 W · Structure no. 22841
- Built
- 1950
- 75 years old, rebuilt 1988
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 36 ft
- 1 main span
- Daily traffic
- 20
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
420 TH Road over Br of Thrid Fk is a steel stringer/multi-beam or girder carrying 420 TH Road over Br of Thrid Fk in Gentry County, Missouri. It was built in 1950 and reconstructed in 1988, so it is 75 years old, older 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. Its operating status is: posted for load restriction.
It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 36 ft (11 m) long and 16 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 420 TH Road over Br of Thrid Fk built?
It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1988.
What condition is 420 TH Road over Br of Thrid Fk 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 March 2023.
How much traffic does 420 TH Road over Br of Thrid Fk carry?
About 20 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is 420 TH Road over Br of Thrid Fk?
The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 16 ft wide.
Who owns 420 TH Road over Br of Thrid Fk?
It is owned by the County Highway Agency.