US 63 N over Rt B
FairBoone County, Missouri · S 32 T 49 N R 12 W · Structure no. 3356
- Built
- 1986
- 39 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 230 ft
- 3 main spans
- Daily traffic
- 15,909
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 63 N over Rt B is a steel continuous stringer/multi-beam or girder carrying US 63 N over Rt B in Boone 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 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 15,909 vehicles a day, roughly 8% of them trucks, projected to reach 26,250 by 2044. The structure is 230 ft (70.1 m) long and 41 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 US 63 N over Rt B built?
It was built in 1986, making it 39 years old in 2025.
What condition is US 63 N over Rt B 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 US 63 N over Rt B carry?
About 15,909 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is US 63 N over Rt B?
The structure is 230 ft (70.1 m) long with a longest span of 121 ft (36.9 m) and a deck 41 ft wide.
Who owns US 63 N over Rt B?
It is owned by the State Highway Agency.