Is 55 S over Cst Herky-Horine RD
FairJefferson County, Missouri · S 19 T 41 N R 6 E · Structure no. 698
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected November 2024
- Type
- Slab
- Concrete Continuous
- Length
- 146 ft
- 3 main spans
- Daily traffic
- 40,184
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Is 55 S over Cst Herky-Horine RD is a concrete continuous slab carrying Is 55 S over Cst Herky-Horine RD in Jefferson County, Missouri. It was built in 1965, so it is 60 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 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 40,184 vehicles a day, roughly 15% of them trucks, projected to reach 74,340 by 2044. The structure is 146 ft (44.5 m) long and 40 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 55 S over Cst Herky-Horine RD built?
It was built in 1965, making it 60 years old in 2025.
What condition is Is 55 S over Cst Herky-Horine RD 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 November 2024.
How much traffic does Is 55 S over Cst Herky-Horine RD carry?
About 40,184 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is Is 55 S over Cst Herky-Horine RD?
The structure is 146 ft (44.5 m) long with a longest span of 58 ft (17.7 m) and a deck 40 ft wide.
Who owns Is 55 S over Cst Herky-Horine RD?
It is owned by the State Highway Agency.