MAD RIVER ROAD
Carrying MAD RIVER ROAD over ENTIAT RIVER
00.4N ARDENVOIR, Chelan, Washington
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MAD RIVER ROAD
The MAD RIVER ROAD bridge in Chelan, Washington carries MAD RIVER ROAD over ENTIAT RIVER. It was built in 1957, making it 69 years old today. The structure is built primarily of steel and spans 4 sections, stretching 36.6 meters (120 feet) end to end. Daily traffic averages 246 vehicles, placing it in the lower-traffic tier of Washington bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 3/9, superstructure at 7/9, substructure at 5/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 18.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MAD RIVER ROAD compares
Live comparison across Washington.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1957
- Material
- Steel
- Number of Spans
- 4
- Structure Length
- 36.6 m (120 ft)
- Deck Width
- 10.5 m (34 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 246 vehicles/day
- Structure Number
- 082439000000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in poor condition (3/9), showing advanced deterioration that may require priority repair.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
MAD RIVER ROAD is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare MAD RIVER ROAD against other structures in Chelan and across Washington. Washington bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for MAD RIVER ROAD?
MAD RIVER ROAD in Chelan, Washington has a deck rating of 3/9, superstructure rating of 7/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is MAD RIVER ROAD inspected?
MAD RIVER ROAD's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 246 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MAD RIVER ROAD is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for MAD RIVER ROAD?
MAD RIVER ROAD has an NBI inventory load rating of 18.8 metric tons.
Who is responsible for maintaining MAD RIVER ROAD?
MAD RIVER ROAD is owned and maintained by County Highway Agency.
How old is MAD RIVER ROAD and does age affect safety?
MAD RIVER ROAD was built in 1957, making it 69 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.