Keystone Crossing over Trib 15
FairSt. Charles County, Missouri · S 11 T 46 N R 2 E · Structure no. 28194
- Built
- 1998
- 27 years old
- Condition
- Fair
- inspected February 2024
- Type
- Culvert
- Concrete
- Length
- 27 ft
- 2 main spans
- Daily traffic
- 386
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Keystone Crossing over Trib 15 is a concrete culvert carrying Keystone Crossing over Trib 15 in St. Charles County, Missouri. It was built in 1998, so it is 27 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 386 vehicles a day, roughly 1% of them trucks, projected to reach 598 by 2044. The structure is 27 ft (8.2 m) long.
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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Keystone Crossing over Trib 15 built?
It was built in 1998, making it 27 years old in 2025.
What condition is Keystone Crossing over Trib 15 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 February 2024.
How much traffic does Keystone Crossing over Trib 15 carry?
About 386 vehicles per day (2024 count), of which roughly 1% are trucks.
How long is Keystone Crossing over Trib 15?
The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).
Who owns Keystone Crossing over Trib 15?
It is owned by the County Highway Agency.