US 285 Nbnd over SH 121 Ml
GoodJefferson County, Colorado · US HWY 285 over SH 121/WA · Structure no. F-16-WI
- Built
- 2012
- 13 years old
- Condition
- Good
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 148 ft
- 1 main span
- Daily traffic
- 24,500
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 285 Nbnd over SH 121 Ml is a prestressed concrete stringer/multi-beam or girder carrying US 285 Nbnd over SH 121 Ml in Jefferson County, Colorado. It was built in 2012, so it is 13 years old, younger than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 24,500 vehicles a day, roughly 2% of them trucks, projected to reach 30,380 by 2040. The structure is 148 ft (45.1 m) long and 63 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 285 Nbnd over SH 121 Ml built?
It was built in 2012, making it 13 years old in 2025.
What condition is US 285 Nbnd over SH 121 Ml in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.
How much traffic does US 285 Nbnd over SH 121 Ml carry?
About 24,500 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is US 285 Nbnd over SH 121 Ml?
The structure is 148 ft (45.1 m) long with a longest span of 142 ft (43.3 m) and a deck 63 ft wide.
Who owns US 285 Nbnd over SH 121 Ml?
It is owned by the State Highway Agency.