Northeast Entrance over Yellowstone River
PoorPark County, Wyoming · 0.64 Mi. East of Tower Jc · Structure no. 1570048P0000000
- Built
- 1961
- 64 years old
- Condition
- Poor
- inspected September 2024
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 604 ft
- 4 main spans
- Daily traffic
- 1,982
- 2019 count
- Owner
- Federal
- National Park Service
About this bridge
Northeast Entrance over Yellowstone River is a steel continuous girder and floorbeam system carrying Northeast Entrance over Yellowstone River in Park County, Wyoming. It was built in 1961, so it is 64 years old, older than the Wyoming average of 48.4 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 1,982 vehicles a day, roughly 1% of them trucks, projected to reach 2,378 by 2039. The structure is 604 ft (184.1 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Northeast Entrance over Yellowstone River built?
It was built in 1961, making it 64 years old in 2025.
What condition is Northeast Entrance over Yellowstone River 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 Northeast Entrance over Yellowstone River carry?
About 1,982 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is Northeast Entrance over Yellowstone River?
The structure is 604 ft (184.1 m) long with a longest span of 170 ft (51.8 m) and a deck 36 ft wide.
Who owns Northeast Entrance over Yellowstone River?
It is owned by the National Park Service.