BUTLER VALLEY RD
Carrying BUTLER VALLEY RD over MAD RIVER
0.1 MI E/O BLACK CRK LN, Humboldt, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: BUTLER VALLEY RD
The BUTLER VALLEY RD bridge in Humboldt, California carries BUTLER VALLEY RD over MAD RIVER. It was built in 1937, making it 89 years old today. It was last reconstructed in 1965, extending its service life. The structure is built primarily of concrete and spans 1 section, stretching 62.2 meters (204 feet) end to end. Daily traffic averages 105 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 22.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How BUTLER VALLEY RD compares
Live comparison across California.
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 How the historical reference is calculated.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
- 1937
- Last Reconstructed
- 1965
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 62.2 m (204 ft)
- Deck Width
- 6.7 m (22 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 105 vehicles/day
- Structure Number
- 04C0052
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether BUTLER VALLEY RD is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare BUTLER VALLEY RD against other structures in Humboldt and across California. California 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 BUTLER VALLEY RD?
BUTLER VALLEY RD in Humboldt, California has a deck rating of 5/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is BUTLER VALLEY RD inspected?
BUTLER VALLEY RD'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 105 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. BUTLER VALLEY RD is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for BUTLER VALLEY RD?
BUTLER VALLEY RD has an NBI inventory load rating of 22.0 metric tons.
Who is responsible for maintaining BUTLER VALLEY RD?
BUTLER VALLEY RD is owned and maintained by County Highway Agency.
How old is BUTLER VALLEY RD and does age affect safety?
BUTLER VALLEY RD was built in 1937, making it 89 years old and last reconstructed in 1965.
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.