Jo Cnty RD 78 over Middle Fork Powder River
FairJohnson County, Wyoming · 12 Mi. S.E. of Kaycee · Structure no. FNT
- Built
- 1990
- 35 years old
- Condition
- Fair
- inspected March 2023
- Type
- Truss - Thru
- Steel
- Length
- 62 ft
- 1 main span
- Daily traffic
- 13
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Jo Cnty RD 78 over Middle Fork Powder River is a steel truss - thru carrying Jo Cnty RD 78 over Middle Fork Powder River in Johnson County, Wyoming. It was built in 1990, so it is 35 years old, younger than the Wyoming average of 48.4 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 13 vehicles a day, roughly 15% of them trucks, projected to reach 18 by 2043. The structure is 62 ft (18.9 m) long and 21 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Jo Cnty RD 78 over Middle Fork Powder River built?
It was built in 1990, making it 35 years old in 2025.
What condition is Jo Cnty RD 78 over Middle Fork Powder 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 March 2023.
How much traffic does Jo Cnty RD 78 over Middle Fork Powder River carry?
About 13 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is Jo Cnty RD 78 over Middle Fork Powder River?
The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 21 ft wide.
Who owns Jo Cnty RD 78 over Middle Fork Powder River?
It is owned by the County Highway Agency.