SH 9 Ml over I 70 Ml
FairSummit County, Colorado · At Frisco · Structure no. F-12-T
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 298 ft
- 2 main spans
- Daily traffic
- 24,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 9 Ml over I 70 Ml is a steel continuous stringer/multi-beam or girder carrying SH 9 Ml over I 70 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 24,000 vehicles a day, roughly 3% of them trucks, projected to reach 28,560 by 2040. The structure is 298 ft (90.7 m) long and 43 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 9 Ml over I 70 Ml built?
It was built in 1971, making it 54 years old in 2025.
What condition is SH 9 Ml over I 70 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 SH 9 Ml over I 70 Ml carry?
About 24,000 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is SH 9 Ml over I 70 Ml?
The structure is 298 ft (90.7 m) long with a longest span of 147 ft (44.8 m) and a deck 43 ft wide.
Who owns SH 9 Ml over I 70 Ml?
It is owned by the State Highway Agency.