Rt Z S over Little Dardenne CR
FairSt. Charles County, Missouri · S 11 T 46 N R 1 E · Structure no. 29782
- Built
- 2004
- 21 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 280 ft
- 4 main spans
- Daily traffic
- 8,589
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Rt Z S over Little Dardenne CR is a prestressed concrete continuous stringer/multi-beam or girder carrying Rt Z S over Little Dardenne CR in St. Charles County, Missouri. It was built in 2004, so it is 21 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 8,589 vehicles a day, roughly 5% of them trucks, projected to reach 15,460 by 2044. The structure is 280 ft (85.3 m) long and 43 ft wide. If it were closed, the detour would be 21.7 mi (35 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 | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Rt Z S over Little Dardenne CR built?
It was built in 2004, making it 21 years old in 2025.
What condition is Rt Z S over Little 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 Rt Z S over Little Dardenne CR carry?
About 8,589 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Rt Z S over Little Dardenne CR?
The structure is 280 ft (85.3 m) long with a longest span of 75 ft (22.9 m) and a deck 43 ft wide.
Who owns Rt Z S over Little Dardenne CR?
It is owned by the State Highway Agency.