SH 348 Ml over Ironstone Canal
PoorMontrose County, Colorado · 4.5 MI W of Olathe · Structure no. J-04-X
- Built
- 1963
- 62 years old, rebuilt 1977
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 30 ft
- 1 main span
- Daily traffic
- 590
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
SH 348 Ml over Ironstone Canal is a steel stringer/multi-beam or girder carrying SH 348 Ml over Ironstone Canal in Montrose County, Colorado. It was built in 1963 and reconstructed in 1977, so it is 62 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 590 vehicles a day, roughly 7% of them trucks, projected to reach 773 by 2040. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 348 Ml over Ironstone Canal built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1977.
What condition is SH 348 Ml over Ironstone Canal in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.
How much traffic does SH 348 Ml over Ironstone Canal carry?
About 590 vehicles per day (2020 count), of which roughly 7% are trucks.
How long is SH 348 Ml over Ironstone Canal?
The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9 m) and a deck 30 ft wide.
Who owns SH 348 Ml over Ironstone Canal?
It is owned by the State Highway Agency.