Is 70 E over Missouri Rvr Cst Main S
FairSt. Charles County, Missouri · S 3280 T 46 N R 5 E · Structure no. 2784
- Built
- 1978
- 47 years old, rebuilt 1984
- Condition
- Fair
- inspected December 2023
- Type
- Truss - Thru
- Steel Continuous
- Length
- 3,792 ft
- 3 main spans
- Daily traffic
- 73,950
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 70 E over Missouri Rvr Cst Main S is a steel continuous truss - thru carrying Is 70 E over Missouri Rvr Cst Main S in St. Charles County, Missouri. It was built in 1978 and reconstructed in 1984, so it is 47 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 73,950 vehicles a day, roughly 12% of them trucks, projected to reach 125,715 by 2044. The structure is 3,792 ft (1,155.8 m) long and 73 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 70 E over Missouri Rvr Cst Main S built?
It was built in 1978, making it 47 years old in 2025. It was reconstructed in 1984.
What condition is Is 70 E over Missouri Rvr Cst Main S 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 December 2023.
How much traffic does Is 70 E over Missouri Rvr Cst Main S carry?
About 73,950 vehicles per day (2024 count), of which roughly 12% are trucks.
How long is Is 70 E over Missouri Rvr Cst Main S?
The structure is 3,792 ft (1,155.8 m) long with a longest span of 480 ft (146.3 m) and a deck 73 ft wide.
Who owns Is 70 E over Missouri Rvr Cst Main S?
It is owned by the State Highway Agency.