Oberhelman RD over Trib of Dardenne C
PoorSt. Charles County, Missouri · S 29 T 46 N R 1 E · Structure no. 22232
- Built
- 1986
- 39 years old
- Condition
- Poor
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 25 ft
- 1 main span
- Daily traffic
- 355
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Oberhelman RD over Trib of Dardenne C is a steel stringer/multi-beam or girder carrying Oberhelman RD over Trib of Dardenne C in St. Charles County, Missouri. It was built in 1986, so it is 39 years old, younger than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 355 vehicles a day, roughly 5% of them trucks, projected to reach 781 by 2044. The structure is 25 ft (7.6 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| 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 Oberhelman RD over Trib of Dardenne C built?
It was built in 1986, making it 39 years old in 2025.
What condition is Oberhelman RD over Trib of Dardenne C in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.
How much traffic does Oberhelman RD over Trib of Dardenne C carry?
About 355 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Oberhelman RD over Trib of Dardenne C?
The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 30 ft wide.
Who owns Oberhelman RD over Trib of Dardenne C?
It is owned by the County Highway Agency.