E I RD over Arrow Creek 145
FairYellowstone County, Montana · 1M E Worden · Structure no. L56004001+05001
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected May 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
E I RD over Arrow Creek 145 is a prestressed concrete tee beam carrying E I RD over Arrow Creek 145 in Yellowstone County, Montana. It was built in 1964, so it is 61 years old, older than the Montana average of 47 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 23 ft (7 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was E I RD over Arrow Creek 145 built?
It was built in 1964, making it 61 years old in 2025.
What condition is E I RD over Arrow Creek 145 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 May 2023.
How much traffic does E I RD over Arrow Creek 145 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is E I RD over Arrow Creek 145?
The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 25 ft wide.
Who owns E I RD over Arrow Creek 145?
It is owned by the County Highway Agency.