Mo 340 E over Rvr Des Peres
FairSt. Louis County, Missouri · S 4 T 45 N R 6 E · Structure no. 5903
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 12,270
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 340 E over Rvr Des Peres is a concrete continuous slab carrying Mo 340 E over Rvr Des Peres in St. Louis County, Missouri. It was built in 1962, so it is 63 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.
It carries about 12,270 vehicles a day, roughly 3% of them trucks, projected to reach 17,178 by 2044. The structure is 123 ft (37.5 m) long and 69 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 | 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mo 340 E over Rvr Des Peres built?
It was built in 1962, making it 63 years old in 2025.
What condition is Mo 340 E over Rvr Des Peres 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 Rvr Des Peres carry?
About 12,270 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is Mo 340 E over Rvr Des Peres?
The structure is 123 ft (37.5 m) long with a longest span of 46 ft (14 m) and a deck 69 ft wide.
Who owns Mo 340 E over Rvr Des Peres?
It is owned by the State Highway Agency.