MIDDLEFIELD RD
Carrying MIDDLEFIELD RD over ADOBE CREEK
E MEADOW DR & CHARLSTN RD, Santa Clara, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MIDDLEFIELD RD
The MIDDLEFIELD RD bridge in Santa Clara, California carries MIDDLEFIELD RD over ADOBE CREEK. It was built in 1989, making it 37 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 9.8 meters (32 feet) end to end. Daily traffic averages 20,000 vehicles, placing it in the heavily-trafficked tier of California bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 7/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 32.4 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MIDDLEFIELD 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 How the historical reference is calculated.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
- 1989
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 9.8 m (32 ft)
- Deck Width
- 26.8 m (88 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 20,000 vehicles/day
- Structure Number
- 37C0370
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 4/9, the deck (driving surface) is in poor shape, with advanced wear flagged for priority repair.
- • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
MIDDLEFIELD RD is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare MIDDLEFIELD RD against other structures in Santa Clara 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 MIDDLEFIELD RD?
MIDDLEFIELD RD in Santa Clara, California has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is MIDDLEFIELD RD inspected?
MIDDLEFIELD 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 20,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MIDDLEFIELD RD is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for MIDDLEFIELD RD?
MIDDLEFIELD RD has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining MIDDLEFIELD RD?
MIDDLEFIELD RD is owned and maintained by City/Municipal Highway Agency.
How old is MIDDLEFIELD RD and does age affect safety?
MIDDLEFIELD RD was built in 1989, making it 37 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.