SH 391 Ml Nbnd over Iliff Gulch
FairJefferson County, Colorado · Kipling 1.5 MI N of US285 · Structure no. F-16-JP
- Built
- 1981
- 44 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 90 ft
- 1 main span
- Daily traffic
- 18,500
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 391 Ml Nbnd over Iliff Gulch is a prestressed concrete stringer/multi-beam or girder carrying SH 391 Ml Nbnd over Iliff Gulch in Jefferson County, Colorado. It was built in 1981, so it is 44 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 18,500 vehicles a day, roughly 3% of them trucks, projected to reach 20,535 by 2040. The structure is 90 ft (27.4 m) long and 39 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 391 Ml Nbnd over Iliff Gulch built?
It was built in 1981, making it 44 years old in 2025.
What condition is SH 391 Ml Nbnd over Iliff Gulch 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 February 2024.
How much traffic does SH 391 Ml Nbnd over Iliff Gulch carry?
About 18,500 vehicles per day (2020 count), of which roughly 3% are trucks.
How long is SH 391 Ml Nbnd over Iliff Gulch?
The structure is 90 ft (27.4 m) long with a longest span of 81 ft (24.7 m) and a deck 39 ft wide.
Who owns SH 391 Ml Nbnd over Iliff Gulch?
It is owned by the State Highway Agency.