MIRAMONTES ST
Carrying MIRAMONTES ST over ARROYO LEON CREEK
0.3 MI E OF MAIN ST, San Mateo, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MIRAMONTES ST
The MIRAMONTES ST bridge in San Mateo, California carries MIRAMONTES ST over ARROYO LEON CREEK. It was built in 1986, making it 40 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 21.6 meters (71 feet) end to end. Daily traffic averages 310 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by City/Municipal 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. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 37.3 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MIRAMONTES ST 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 How the historical reference is calculated.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
- 1986
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 21.6 m (71 ft)
- Deck Width
- 7.9 m (26 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 310 vehicles/day
- Structure Number
- 35C0098
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether MIRAMONTES ST 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 MIRAMONTES ST against other structures in San Mateo 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 MIRAMONTES ST?
MIRAMONTES ST in San Mateo, 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 MIRAMONTES ST inspected?
MIRAMONTES ST'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 310 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MIRAMONTES ST 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 MIRAMONTES ST?
MIRAMONTES ST has an NBI inventory load rating of 37.3 metric tons.
Who is responsible for maintaining MIRAMONTES ST?
MIRAMONTES ST is owned and maintained by City/Municipal Highway Agency.
How old is MIRAMONTES ST and does age affect safety?
MIRAMONTES ST was built in 1986, making it 40 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.