Mexico RD over Dardenne CR
FairSt. Charles County, Missouri · S 1738 T 47 N R 3 E · Structure no. 23080
- Built
- 1988
- 37 years old, rebuilt 2025
- Condition
- Fair
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 228 ft
- 3 main spans
- Daily traffic
- 22,000
- 2024 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Mexico RD over Dardenne CR is a prestressed concrete stringer/multi-beam or girder carrying Mexico RD over Dardenne CR in St. Charles County, Missouri. It was built in 1988 and reconstructed in 2025, so it is 37 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 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 22,000 vehicles a day, roughly 5% of them trucks, projected to reach 34,100 by 2044. The structure is 228 ft (69.5 m) long and 65 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mexico RD over Dardenne CR built?
It was built in 1988, making it 37 years old in 2025. It was reconstructed in 2025.
What condition is Mexico RD 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 January 2024.
How much traffic does Mexico RD over Dardenne CR carry?
About 22,000 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Mexico RD over Dardenne CR?
The structure is 228 ft (69.5 m) long with a longest span of 76 ft (23.3 m) and a deck 65 ft wide.
Who owns Mexico RD over Dardenne CR?
It is owned by the City or Municipal Highway Agency.