Mo 366 E over US 50
FairSt. Louis County, Missouri · S 13 T 44 N R 5 E · Structure no. 2595
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 155 ft
- 4 main spans
- Daily traffic
- 20,756
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 366 E over US 50 is a prestressed concrete continuous stringer/multi-beam or girder carrying Mo 366 E over US 50 in St. Louis County, Missouri. It was built in 1983, so it is 42 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 20,756 vehicles a day, roughly 13% of them trucks, projected to reach 29,058 by 2044. The structure is 155 ft (47.2 m) long and 95 ft wide. If it were closed, the detour would be 5 mi (8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 366 E over US 50 built?
It was built in 1983, making it 42 years old in 2025.
What condition is Mo 366 E over US 50 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 July 2024.
How much traffic does Mo 366 E over US 50 carry?
About 20,756 vehicles per day (2024 count), of which roughly 13% are trucks.
How long is Mo 366 E over US 50?
The structure is 155 ft (47.2 m) long with a longest span of 46 ft (14 m) and a deck 95 ft wide.
Who owns Mo 366 E over US 50?
It is owned by the State Highway Agency.