US 285 SR over Chalk Creek
FairChaffee County, Colorado · At Nathrop · Structure no. J-12-H
- Built
- 1932
- 93 years old
- Condition
- Fair
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 62 ft
- 1 main span
- Daily traffic
- 7,553
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 285 SR over Chalk Creek is a steel stringer/multi-beam or girder carrying US 285 SR over Chalk Creek in Chaffee County, Colorado. It was built in 1932, so it is 93 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 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 7,553 vehicles a day, roughly 2% of them trucks, projected to reach 9,215 by 2042. The structure is 62 ft (18.9 m) long and 29 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 285 SR over Chalk Creek built?
It was built in 1932, making it 93 years old in 2025.
What condition is US 285 SR over Chalk Creek 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 December 2023.
How much traffic does US 285 SR over Chalk Creek carry?
About 7,553 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is US 285 SR over Chalk Creek?
The structure is 62 ft (18.9 m) long with a longest span of 59 ft (18 m) and a deck 29 ft wide.
Who owns US 285 SR over Chalk Creek?
It is owned by the State Highway Agency.