I70 Ml Wbnd over SH 9 Ml
FairSummit County, Colorado · At Silverthorne · Structure no. F-12-R
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 312 ft
- 4 main spans
- Daily traffic
- 20,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
I70 Ml Wbnd over SH 9 Ml is a steel continuous stringer/multi-beam or girder carrying I70 Ml Wbnd over SH 9 Ml in Summit County, Colorado. It was built in 1971, so it is 54 years old, older than the Colorado average of 42.2 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.
It carries about 20,000 vehicles a day, roughly 10% of them trucks, projected to reach 24,600 by 2040. The structure is 312 ft (95.1 m) long and 45 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I70 Ml Wbnd over SH 9 Ml built?
It was built in 1971, making it 54 years old in 2025.
What condition is I70 Ml Wbnd over SH 9 Ml 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 April 2023.
How much traffic does I70 Ml Wbnd over SH 9 Ml carry?
About 20,000 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is I70 Ml Wbnd over SH 9 Ml?
The structure is 312 ft (95.1 m) long with a longest span of 85 ft (26 m) and a deck 45 ft wide.
Who owns I70 Ml Wbnd over SH 9 Ml?
It is owned by the State Highway Agency.