Third ST NE over Abandoned Rr-Antelope CR
PoorWheatland County, Montana · Harlowton-Third ST NE · Structure no. P00014100+04531
- Built
- 1939
- 86 years old
- Condition
- Poor
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 204 ft
- 3 main spans
- Daily traffic
- 2,063
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Third ST NE over Abandoned Rr-Antelope CR is a steel continuous stringer/multi-beam or girder carrying Third ST NE over Abandoned Rr-Antelope CR in Wheatland County, Montana. It was built in 1939, so it is 86 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 2,063 vehicles a day, roughly 4% of them trucks, projected to reach 2,166 by 2043. The structure is 204 ft (62.1 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 Third ST NE over Abandoned Rr-Antelope CR built?
It was built in 1939, making it 86 years old in 2025.
What condition is Third ST NE over Abandoned Rr-Antelope CR 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 September 2024.
How much traffic does Third ST NE over Abandoned Rr-Antelope CR carry?
About 2,063 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Third ST NE over Abandoned Rr-Antelope CR?
The structure is 204 ft (62.1 m) long with a longest span of 64 ft (19.5 m) and a deck 35 ft wide.
Who owns Third ST NE over Abandoned Rr-Antelope CR?
It is owned by the State Highway Agency.