Mo 340 E over Mo 141
FairSt. Louis County, Missouri · S 367 T 46 N R 5 E · Structure no. 32973
- Built
- 2011
- 14 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 96 ft
- 1 main span
- Daily traffic
- 15,056
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 340 E over Mo 141 is a prestressed concrete stringer/multi-beam or girder carrying Mo 340 E over Mo 141 in St. Louis County, Missouri. It was built in 2011, so it is 14 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 15,056 vehicles a day, roughly 7% of them trucks, projected to reach 21,078 by 2044. The structure is 96 ft (29.4 m) long and 179 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 340 E over Mo 141 built?
It was built in 2011, making it 14 years old in 2025.
What condition is Mo 340 E over Mo 141 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 October 2024.
How much traffic does Mo 340 E over Mo 141 carry?
About 15,056 vehicles per day (2024 count), of which roughly 7% are trucks.
How long is Mo 340 E over Mo 141?
The structure is 96 ft (29.4 m) long with a longest span of 94 ft (28.7 m) and a deck 179 ft wide.
Who owns Mo 340 E over Mo 141?
It is owned by the State Highway Agency.