Is 49 S over Mna RR
FairCass County, Missouri · S 5 T 44 N R 31 W · Structure no. 1237
- Built
- 1965
- 60 years old, rebuilt 2002
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 222 ft
- 3 main spans
- Daily traffic
- 18,819
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 49 S over Mna RR is a steel continuous stringer/multi-beam or girder carrying Is 49 S over Mna RR in Cass County, Missouri. It was built in 1965 and reconstructed in 2002, so it is 60 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 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 18,819 vehicles a day, roughly 27% of them trucks, projected to reach 32,933 by 2044. The structure is 222 ft (67.7 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 49 S over Mna RR built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2002.
What condition is Is 49 S over Mna RR 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 November 2023.
How much traffic does Is 49 S over Mna RR carry?
About 18,819 vehicles per day (2024 count), of which roughly 27% are trucks.
How long is Is 49 S over Mna RR?
The structure is 222 ft (67.7 m) long with a longest span of 82 ft (25 m) and a deck 34 ft wide.
Who owns Is 49 S over Mna RR?
It is owned by the State Highway Agency.