SH 121 Ml over Ped Underpass Draw
FairJefferson County, Colorado · 0.2 MI No of JCT SH 470 · Structure no. F-16-DD
- Built
- 1964
- 61 years old, rebuilt 1971
- Condition
- Fair
- inspected January 2025
- Type
- Culvert
- Concrete
- Length
- 22 ft
- 2 main spans
- Daily traffic
- 20,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 121 Ml over Ped Underpass Draw is a concrete culvert carrying SH 121 Ml over Ped Underpass Draw in Jefferson County, Colorado. It was built in 1964 and reconstructed in 1971, so it is 61 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 20,000 vehicles a day, roughly 1% of them trucks, projected to reach 22,000 by 2040. The structure is 22 ft (6.7 m) long and 169 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 121 Ml over Ped Underpass Draw built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1971.
What condition is SH 121 Ml over Ped Underpass Draw 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 January 2025.
How much traffic does SH 121 Ml over Ped Underpass Draw carry?
About 20,000 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is SH 121 Ml over Ped Underpass Draw?
The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 169 ft wide.
Who owns SH 121 Ml over Ped Underpass Draw?
It is owned by the State Highway Agency.