Mad River Road over Entiat River
PoorChelan County, Washington · 00.4N Ardenvoir · Structure no. 082439000000000
- Built
- 1957
- 68 years old
- Condition
- Poor
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 120 ft
- 4 main spans
- Daily traffic
- 246
- 2018 count
- Owner
- County
- County Highway Agency
About this bridge
Mad River Road over Entiat River is a steel stringer/multi-beam or girder carrying Mad River Road over Entiat River in Chelan County, Washington. It was built in 1957, so it is 68 years old, older than the Washington average of 49.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 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 246 vehicles a day, roughly 8% of them trucks, projected to reach 308 by 2038. The structure is 120 ft (36.6 m) long and 34 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 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mad River Road over Entiat River built?
It was built in 1957, making it 68 years old in 2025.
What condition is Mad River Road over Entiat 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 January 2024.
How much traffic does Mad River Road over Entiat River carry?
About 246 vehicles per day (2018 count), of which roughly 8% are trucks.
How long is Mad River Road over Entiat River?
The structure is 120 ft (36.6 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.
Who owns Mad River Road over Entiat River?
It is owned by the County Highway Agency.