ISLAY ST
Carrying ISLAY ST over MISSION CREEK
AT CASTILLO ST, Santa Barbara, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: ISLAY ST
The ISLAY ST bridge in Santa Barbara, California carries ISLAY ST over MISSION CREEK. It was built in 1982, making it 44 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 16.2 meters (53 feet) end to end. Daily traffic averages 700 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 7/9, superstructure at 7/9, substructure at 4/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 47.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How ISLAY 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 How the historical reference is calculated.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
- 1982
- Material
- Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 16.2 m (53 ft)
- Deck Width
- 8.2 m (27 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 700 vehicles/day
- Structure Number
- 51C0289
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • 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) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
How to read this record
ISLAY ST 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 ISLAY ST against other structures in Santa Barbara 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 ISLAY ST?
ISLAY ST in Santa Barbara, California has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is ISLAY ST inspected?
ISLAY 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 700 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ISLAY ST 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 ISLAY ST?
ISLAY ST has an NBI inventory load rating of 47.6 metric tons.
Who is responsible for maintaining ISLAY ST?
ISLAY ST is owned and maintained by City/Municipal Highway Agency.
How old is ISLAY ST and does age affect safety?
ISLAY ST was built in 1982, making it 44 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.