North Entrance Roa over Gardner River
FairClosed to trafficPark County, Montana · 1.5 Mi. South of North En · Structure no. 1570024P0000000
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected September 2022
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 104 ft
- 1 main span
- Daily traffic
- 2,294
- 2019 count
- Owner
- Federal
- National Park Service
About this bridge
North Entrance Roa over Gardner River is a steel stringer/multi-beam or girder carrying North Entrance Roa over Gardner River in Park County, Montana. It was built in 1957, so it is 68 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: closed to all traffic.
It carries about 2,294 vehicles a day, roughly 1% of them trucks, projected to reach 2,753 by 2039. The structure is 104 ft (31.7 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was North Entrance Roa over Gardner River built?
It was built in 1957, making it 68 years old in 2025.
What condition is North Entrance Roa over Gardner River 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 September 2022.
How much traffic does North Entrance Roa over Gardner River carry?
About 2,294 vehicles per day (2019 count), of which roughly 1% are trucks.
How long is North Entrance Roa over Gardner River?
The structure is 104 ft (31.7 m) long with a longest span of 95 ft (29 m) and a deck 36 ft wide.
Who owns North Entrance Roa over Gardner River?
It is owned by the National Park Service.