US 6 Ml over SH 121 Ml
PoorJefferson County, Colorado · In Lakewood · Structure no. F-16-O
- Built
- 1972
- 53 years old
- Condition
- Poor
- inspected January 2025
- Type
- Tee Beam
- Concrete Continuous
- Length
- 190 ft
- 4 main spans
- Daily traffic
- 101,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 6 Ml over SH 121 Ml is a concrete continuous tee beam carrying US 6 Ml over SH 121 Ml in Jefferson County, Colorado. It was built in 1972, so it is 53 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 101,000 vehicles a day, roughly 2% of them trucks, projected to reach 111,100 by 2040. The structure is 190 ft (57.9 m) long and 112 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 6 Ml over SH 121 Ml built?
It was built in 1972, making it 53 years old in 2025.
What condition is US 6 Ml over SH 121 Ml in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.
How much traffic does US 6 Ml over SH 121 Ml carry?
About 101,000 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is US 6 Ml over SH 121 Ml?
The structure is 190 ft (57.9 m) long with a longest span of 52 ft (15.8 m) and a deck 112 ft wide.
Who owns US 6 Ml over SH 121 Ml?
It is owned by the State Highway Agency.