I25NB Ramp to C470 over I 25 SH 470 Ml Ramps R
FairDouglas County, Colorado · Top Flyover JCT I-25 &am · Structure no. F-17-IQ
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected August 2023
- Type
- Box Beam or Girders - Single or Spread
- Steel Continuous
- Length
- 781 ft
- 6 main spans
- Daily traffic
- 47,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
I25NB Ramp to C470 over I 25 SH 470 Ml Ramps R is a steel continuous box beam or girders - single or spread carrying I25NB Ramp to C470 over I 25 SH 470 Ml Ramps R in Douglas County, Colorado. It was built in 1985, so it is 40 years old, younger 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 47,000 vehicles a day, roughly 2% of them trucks, projected to reach 63,450 by 2040. The structure is 781 ft (238.2 m) long and 31 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I25NB Ramp to C470 over I 25 SH 470 Ml Ramps R built?
It was built in 1985, making it 40 years old in 2025.
What condition is I25NB Ramp to C470 over I 25 SH 470 Ml Ramps R 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 August 2023.
How much traffic does I25NB Ramp to C470 over I 25 SH 470 Ml Ramps R carry?
About 47,000 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is I25NB Ramp to C470 over I 25 SH 470 Ml Ramps R?
The structure is 781 ft (238.2 m) long with a longest span of 155 ft (47.3 m) and a deck 31 ft wide.
Who owns I25NB Ramp to C470 over I 25 SH 470 Ml Ramps R?
It is owned by the State Highway Agency.