RTE 25B
Carrying RTE 25B over RTE 908G
RTE 25B+NSP EB, Nassau, New York
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
RTE 25B in Nassau, New York sits above 96% of rated New York bridges on inventory load rating (78 t), while its 1934 build year is earlier than 81% of Nassau's recorded-year cohort (328 bridges).
RTE 25B in Nassau, New York is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1934, it carries 2 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 NY:000000001018399
PRE-1950 · CONCRETE · SINGLE-SPAN · SUPER-LED · HEAVY-ADT · HEAVY-LOAD · CAT-FAIR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- SINGLE-SPAN Single span
- SUPER-LED Superstructure-led
- HEAVY-ADT Heavy ADT
- HEAVY-LOAD Heavy 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.
Structural health score
A composite of the deck, superstructure, and substructure NBI condition ratings plus the inventory load rating, benchmarked against the full national bridge corpus, distinct from the Good/Fair/Poor category above.
Bridge Snapshot: RTE 25B
The RTE 25B bridge in Nassau, New York carries RTE 25B over RTE 908G. It was built in 1934, making it 92 years old today. The structure is built primarily of concrete and spans 1 section, stretching 19.8 meters (65 feet) end to end. Daily traffic averages 12,715 vehicles, placing it in the heavily-trafficked tier of New York bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection places the weakest component in fair condition (see the full component ratings below). None of this bridge's reported major components fall into the Poor condition range.
How RTE 25B compares
Age against the county: built in 1934, earlier than 267 of Nassau's 328 bridges with a recorded construction year (81%), against a county median build year of 1956. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across New York bridges with a recorded inventory load rating (17,641 of 17,642 rated).
RTE 25B vs every rated New York bridge
Inventory load rating (metric tons), FHWA NBI, this state
78 Top 4% higher than 96% of 17,641 bridges
rated New York 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.
Nassau inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 328 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
- 1934
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 19.8 m (65 ft)
- Deck Width
- 23.7 m (78 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 12,715 vehicles/day
- Structure Number
- 000000001018399
Condition Analysis
- • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
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 RTE 25B 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 RTE 25B against other structures in Nassau and across New York. New York 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 RTE 25B?
RTE 25B in Nassau, New York, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is RTE 25B inspected?
RTE 25B'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 12,715 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. RTE 25B 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 RTE 25B?
RTE 25B has an NBI inventory load rating of 78.0 metric tons.
Who is responsible for maintaining RTE 25B?
RTE 25B is owned and maintained by State Highway Agency.
How old is RTE 25B and does age affect safety?
RTE 25B was built in 1934, making it 92 years old.
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.