SH 139 Ml over Highline Canal
FairMesa County, Colorado · 5.7 MI N JCT I70-A · Structure no. G-01-D
- Built
- 1930
- 95 years old, rebuilt 1976
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 43 ft
- 2 main spans
- Daily traffic
- 720
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 139 Ml over Highline Canal is a steel continuous stringer/multi-beam or girder carrying SH 139 Ml over Highline Canal in Mesa County, Colorado. It was built in 1930 and reconstructed in 1976, so it is 95 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 720 vehicles a day, roughly 15% of them trucks, projected to reach 986 by 2040. The structure is 43 ft (13.1 m) long and 30 ft wide. If it were closed, the detour would be 62.1 mi (100 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 139 Ml over Highline Canal built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1976.
What condition is SH 139 Ml over Highline Canal 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 139 Ml over Highline Canal carry?
About 720 vehicles per day (2020 count), of which roughly 15% are trucks.
How long is SH 139 Ml over Highline Canal?
The structure is 43 ft (13.1 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.
Who owns SH 139 Ml over Highline Canal?
It is owned by the State Highway Agency.