Or 64 E over Dardenne CR
FairSt. Charles County, Missouri · S 1641 T 46 N R 2 E · Structure no. 1209
- Built
- 1968
- 57 years old, rebuilt 1977
- Condition
- Fair
- inspected September 2023
- Type
- Slab
- Concrete Continuous
- Length
- 189 ft
- 3 main spans
- Daily traffic
- 7,071
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Or 64 E over Dardenne CR is a concrete continuous slab carrying Or 64 E over Dardenne CR in St. Charles County, Missouri. It was built in 1968 and reconstructed in 1977, so it is 57 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 7,071 vehicles a day, roughly 5% of them trucks, projected to reach 13,788 by 2044. The structure is 189 ft (57.5 m) long and 35 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Or 64 E over Dardenne CR built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1977.
What condition is Or 64 E over Dardenne CR 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 September 2023.
How much traffic does Or 64 E over Dardenne CR carry?
About 7,071 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Or 64 E over Dardenne CR?
The structure is 189 ft (57.5 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.
Who owns Or 64 E over Dardenne CR?
It is owned by the State Highway Agency.