I 15 over Int Lima-Bailey ST
PoorBeaverhead County, Montana · Lima · Structure no. I00015015+01701
- Built
- 1959
- 66 years old
- Condition
- Poor
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 119 ft
- 3 main spans
- Daily traffic
- 1,863
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 15 over Int Lima-Bailey ST is a prestressed concrete stringer/multi-beam or girder carrying I 15 over Int Lima-Bailey ST in Beaverhead County, Montana. It was built in 1959, so it is 66 years old, older than the Montana average of 47 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 1,863 vehicles a day, roughly 29% of them trucks, projected to reach 1,993 by 2043. The structure is 119 ft (36.3 m) long and 48 ft wide.
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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 15 over Int Lima-Bailey ST built?
It was built in 1959, making it 66 years old in 2025.
What condition is I 15 over Int Lima-Bailey ST 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 August 2024.
How much traffic does I 15 over Int Lima-Bailey ST carry?
About 1,863 vehicles per day (2023 count), of which roughly 29% are trucks.
How long is I 15 over Int Lima-Bailey ST?
The structure is 119 ft (36.3 m) long with a longest span of 47 ft (14.2 m) and a deck 48 ft wide.
Who owns I 15 over Int Lima-Bailey ST?
It is owned by the State Highway Agency.