US 63C S over Is 70
FairPosted for loadBoone County, Missouri · S 8 T 48 N R 12 W · Structure no. 574
- Built
- 1961
- 64 years old, rebuilt 1983
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 215 ft
- 4 main spans
- Daily traffic
- 34,174
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 63C S over Is 70 is a steel continuous stringer/multi-beam or girder carrying US 63C S over Is 70 in Boone County, Missouri. It was built in 1961 and reconstructed in 1983, so it is 64 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.
It carries about 34,174 vehicles a day, roughly 25% of them trucks, projected to reach 63,222 by 2044. The structure is 215 ft (65.5 m) long and 79 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 63C S over Is 70 built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1983.
What condition is US 63C S over Is 70 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 63C S over Is 70 carry?
About 34,174 vehicles per day (2024 count), of which roughly 25% are trucks.
How long is US 63C S over Is 70?
The structure is 215 ft (65.5 m) long with a longest span of 58 ft (17.7 m) and a deck 79 ft wide.
Who owns US 63C S over Is 70?
It is owned by the State Highway Agency.