Mo 141 S over Is 55
FairJefferson County, Missouri · S 2991 T 43 N R 6 E · Structure no. 12094
- Built
- 2001
- 24 years old
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 351 ft
- 2 main spans
- Daily traffic
- 39,511
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 141 S over Is 55 is a steel continuous stringer/multi-beam or girder carrying Mo 141 S over Is 55 in Jefferson County, Missouri. It was built in 2001, so it is 24 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 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 39,511 vehicles a day, roughly 4% of them trucks, projected to reach 67,169 by 2044. The structure is 351 ft (107 m) long and 125 ft wide. If it were closed, the detour would be 14.9 mi (24 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 141 S over Is 55 built?
It was built in 2001, making it 24 years old in 2025.
What condition is Mo 141 S over Is 55 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 2024.
How much traffic does Mo 141 S over Is 55 carry?
About 39,511 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Mo 141 S over Is 55?
The structure is 351 ft (107 m) long with a longest span of 175 ft (53.4 m) and a deck 125 ft wide.
Who owns Mo 141 S over Is 55?
It is owned by the State Highway Agency.