WB 6th Ave over Bnf RR | Rtd | Mariposa
FairDenver County, Colorado · 0.35 MI East of I25 · Structure no. D-03-V-160
- Built
- 1958
- 67 years old, rebuilt 2008
- Condition
- Fair
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,345 ft
- 19 main spans
- Daily traffic
- 31,795
- 2021 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
WB 6th Ave over Bnf RR | Rtd | Mariposa is a steel continuous stringer/multi-beam or girder carrying WB 6th Ave over Bnf RR | Rtd | Mariposa in Denver County, Colorado. It was built in 1958 and reconstructed in 2008, so it is 67 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 5 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 31,795 vehicles a day, roughly 5% of them trucks, projected to reach 35,292 by 2041. The structure is 1,345 ft (409.9 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 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 WB 6th Ave over Bnf RR | Rtd | Mariposa built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2008.
What condition is WB 6th Ave over Bnf RR | Rtd | Mariposa 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 November 2024.
How much traffic does WB 6th Ave over Bnf RR | Rtd | Mariposa carry?
About 31,795 vehicles per day (2021 count), of which roughly 5% are trucks.
How long is WB 6th Ave over Bnf RR | Rtd | Mariposa?
The structure is 1,345 ft (409.9 m) long with a longest span of 95 ft (29 m) and a deck 36 ft wide.
Who owns WB 6th Ave over Bnf RR | Rtd | Mariposa?
It is owned by the City or Municipal Highway Agency.