ROCK CREEK ROAD
Carrying ROCK CREEK ROAD over ROCK CREEK OVERFLOW
1.8 MI SE OF MILTON, Calaveras, California
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
ROCK CREEK ROAD in Calaveras, California sits above 4% of rated California bridges on inventory load rating (16 t), while its 1936 build year is earlier than 75% of Calaveras's recorded-year cohort (105 bridges).
ROCK CREEK ROAD in Calaveras, California is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1936, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 5. The lowest applicable rating sets the federal condition category, so this Fair result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure CA:30C0005
PRE-1950 · CONCRETE · MULTI-SPAN · SUB-LED · TRACE-ADT · LIGHT-LOAD · CAT-FAIR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- MULTI-SPAN 2 spans
- SUB-LED Substructure-led
- TRACE-ADT Trace ADT
- LIGHT-LOAD Light load
- CAT-FAIR Fair
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: ROCK CREEK ROAD
The ROCK CREEK ROAD bridge in Calaveras, California carries ROCK CREEK ROAD over ROCK CREEK OVERFLOW. It was built in 1936, making it 90 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 9.8 meters (32 feet) end to end. Daily traffic averages 37 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 7/9, superstructure at 7/9, substructure at 5/9. The weakest component sits in fair condition. All reported major components score above the Poor range.
How ROCK CREEK ROAD compares
Age against the county: built in 1936, earlier than 79 of Calaveras's 105 bridges with a recorded construction year (75%), against a county median build year of 1962. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across California bridges with a recorded inventory load rating (25,538 of 25,848 rated).
ROCK CREEK ROAD vs every rated California bridge
Inventory load rating (metric tons), FHWA NBI, this state
16 Top 96% higher than 4% of 25,538 bridges
rated California bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Calaveras inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 105 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1936
- Material
- Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 9.8 m (32 ft)
- Deck Width
- 6.3 m (21 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 37 vehicles/day
- Structure Number
- 30C0005
Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • 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.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether ROCK CREEK ROAD 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 ROCK CREEK ROAD against other structures in Calaveras 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 ROCK CREEK ROAD?
ROCK CREEK ROAD in Calaveras, California has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is ROCK CREEK ROAD inspected?
ROCK CREEK 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 37 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ROCK CREEK ROAD 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 ROCK CREEK ROAD?
ROCK CREEK ROAD has an NBI inventory load rating of 16.2 metric tons.
Who is responsible for maintaining ROCK CREEK ROAD?
ROCK CREEK ROAD is owned and maintained by County Highway Agency.
How old is ROCK CREEK ROAD and does age affect safety?
ROCK CREEK ROAD was built in 1936, making it 90 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.
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Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.