MITCHELL RD-S99 ON
Carrying MITCHELL RD-S99 ON over CERES MAIN CANAL
10-STA-099-R10.03, Stanislaus, California
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
MITCHELL RD-S99 ON in Stanislaus, California sits above 4% of rated California bridges on inventory load rating (16 t), while its 1912 build year is earlier than 99% of Stanislaus's recorded-year cohort (386 bridges).
MITCHELL RD-S99 ON in Stanislaus, California is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1912, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. 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:38 0007K
PRE-1950 · CONCRETE · MULTI-SPAN · TIED-CTRL · ARTERIAL-ADT · LIGHT-LOAD · CAT-FAIR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- MULTI-SPAN 2 spans
- TIED-CTRL Tied control
- 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: MITCHELL RD-S99 ON
The MITCHELL RD-S99 ON bridge in Stanislaus, California carries MITCHELL RD-S99 ON over CERES MAIN CANAL. It was built in 1912, making it 114 years old today. It was last reconstructed in 1927, extending its service life. The structure is built primarily of concrete and spans 2 sections, stretching 9.5 meters (31 feet) end to end. Daily traffic averages 7,400 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 7/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range.
How MITCHELL RD-S99 ON compares
Age against the county: built in 1912, earlier than 381 of Stanislaus's 386 bridges with a recorded construction year (99%), 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).
MITCHELL RD-S99 ON 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.
Stanislaus inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 386 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
- 1912
- Last Reconstructed
- 1927
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 9.5 m (31 ft)
- Deck Width
- 10.4 m (34 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 7,400 vehicles/day
- Structure Number
- 38 0007K
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
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 MITCHELL RD-S99 ON 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 MITCHELL RD-S99 ON 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 MITCHELL RD-S99 ON?
MITCHELL RD-S99 ON in Stanislaus, California has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is MITCHELL RD-S99 ON inspected?
MITCHELL RD-S99 ON'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 7,400 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MITCHELL RD-S99 ON 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 MITCHELL RD-S99 ON?
MITCHELL RD-S99 ON has an NBI inventory load rating of 16.2 metric tons.
Who is responsible for maintaining MITCHELL RD-S99 ON?
MITCHELL RD-S99 ON is owned and maintained by State Highway Agency.
How old is MITCHELL RD-S99 ON and does age affect safety?
MITCHELL RD-S99 ON was built in 1912, making it 114 years old and last reconstructed in 1927.
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.
Share this inspection record
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.