OAKLEY ROAD
Carrying OAKLEY ROAD over STATE ROUTE 160
04-CC-160-0.48, Contra Costa, California
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
OAKLEY ROAD in Contra Costa, California sits above 3% of rated California bridges on inventory load rating (15 t), while its 1971 build year is earlier than 50% of Contra Costa's recorded-year cohort (618 bridges).
OAKLEY ROAD in Contra Costa, California is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1971, 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:28 0109
INTERSTATE-ERA · PRESTRESS · MULTI-SPAN · DECK-LED · ARTERIAL-ADT · LIGHT-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- MULTI-SPAN 2 spans
- DECK-LED Deck-led
- ARTERIAL-ADT Arterial 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: OAKLEY ROAD
The OAKLEY ROAD bridge in Contra Costa, California carries OAKLEY ROAD over STATE ROUTE 160. It was built in 1971, making it 55 years old today. The structure is built primarily of prestressed concrete continuous and spans 2 sections, stretching 69.8 meters (229 feet) end to end. Daily traffic averages 1,700 vehicles, placing it in the moderately-trafficked tier of California bridges. It is owned and maintained by State 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. None of this bridge's reported major components fall into the Poor condition range.
How OAKLEY ROAD compares
Age against the county: built in 1971, earlier than 308 of Contra Costa's 618 bridges with a recorded construction year (50%), against a county median build year of 1971.
Live comparison across California bridges with a recorded inventory load rating (25,538 of 25,848 rated).
OAKLEY ROAD vs every rated California bridge
Inventory load rating (metric tons), FHWA NBI, this state
15 Top 97% higher than 3% 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.
Contra Costa inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 618 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
- 1971
- Material
- Prestressed Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 69.8 m (229 ft)
- Deck Width
- 15.8 m (52 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 1,700 vehicles/day
- Structure Number
- 28 0109
Condition Analysis
- • The deck (driving surface) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
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 OAKLEY 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 OAKLEY ROAD against other structures in Contra Costa 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 OAKLEY ROAD?
OAKLEY ROAD in Contra Costa, 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 OAKLEY ROAD inspected?
OAKLEY 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 1,700 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. OAKLEY 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 OAKLEY ROAD?
OAKLEY ROAD has an NBI inventory load rating of 15.2 metric tons.
Who is responsible for maintaining OAKLEY ROAD?
OAKLEY ROAD is owned and maintained by State Highway Agency.
How old is OAKLEY ROAD and does age affect safety?
OAKLEY ROAD was built in 1971, making it 55 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.