SH 121 Ml over US 36 Ml
GoodBroomfield County, Colorado · In Broomfield · Structure no. E-16-YB
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 300 ft
- 3 main spans
- Daily traffic
- 39,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 121 Ml over US 36 Ml is a prestressed concrete continuous stringer/multi-beam or girder carrying SH 121 Ml over US 36 Ml in Broomfield County, Colorado. It was built in 2014, so it is 11 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 39,000 vehicles a day, roughly 2% of them trucks, projected to reach 47,970 by 2040. The structure is 300 ft (91.3 m) long and 134 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 121 Ml over US 36 Ml built?
It was built in 2014, making it 11 years old in 2025.
What condition is SH 121 Ml over US 36 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 January 2025.
How much traffic does SH 121 Ml over US 36 Ml carry?
About 39,000 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is SH 121 Ml over US 36 Ml?
The structure is 300 ft (91.3 m) long with a longest span of 118 ft (35.9 m) and a deck 134 ft wide.
Who owns SH 121 Ml over US 36 Ml?
It is owned by the State Highway Agency.