OAK FLAT ROAD
Carrying OAK FLAT ROAD over CALIFORNIA AQUEDUCT
0.4 MI WEST OF WARD AVE, Stanislaus, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: OAK FLAT ROAD
The OAK FLAT ROAD bridge in Stanislaus, California carries OAK FLAT ROAD over CALIFORNIA AQUEDUCT. It was built in 1966, making it 60 years old today. The structure is built primarily of prestressed concrete and spans 2 sections, stretching 45.8 meters (150 feet) end to end. Daily traffic averages 158 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by Other State Agencies.
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. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 33.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How OAK FLAT ROAD 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 How the historical reference is calculated.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
- 1966
- Material
- Prestressed Concrete
- Number of Spans
- 2
- Structure Length
- 45.8 m (150 ft)
- Deck Width
- 10.0 m (33 ft)
- Owner
- Other State Agencies
- Avg Daily Traffic
- 158 vehicles/day
- Structure Number
- 38C0211
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
This page shows what the last federal inspection recorded, not whether OAK FLAT 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 OAK FLAT ROAD against other structures in Stanislaus 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 OAK FLAT ROAD?
OAK FLAT ROAD in Stanislaus, 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 OAK FLAT ROAD inspected?
OAK FLAT 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 158 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. OAK FLAT 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 OAK FLAT ROAD?
OAK FLAT ROAD has an NBI inventory load rating of 33.0 metric tons.
Who is responsible for maintaining OAK FLAT ROAD?
OAK FLAT ROAD is owned and maintained by Other State Agencies.
How old is OAK FLAT ROAD and does age affect safety?
OAK FLAT ROAD was built in 1966, making it 60 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.