CO RT 521
Carrying CO RT 521 over BEAVER BROOK
0.23 MI NORTH OF I80, Warren, New Jersey
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
CO RT 521 in Warren, New Jersey sits above 55% of rated New Jersey bridges on inventory load rating (43 t), while its 1970 build year is earlier than 35% of Warren's recorded-year cohort (268 bridges).
CO RT 521 in Warren, New Jersey is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1970, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good 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 NJ:2101105
INTERSTATE-ERA · CONCRETE · MULTI-SPAN · CULVERT-LED · ARTERIAL-ADT · HEAVY-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- ARTERIAL-ADT Arterial ADT
- HEAVY-LOAD Heavy load
- CAT-GOOD Good
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: CO RT 521
The CO RT 521 bridge in Warren, New Jersey carries CO RT 521 over BEAVER BROOK. It was built in 1970, making it 56 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 12.2 meters (40 feet) end to end. Daily traffic averages 4,024 vehicles, placing it in the moderately-trafficked tier of New Jersey bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range.
How CO RT 521 compares
Age against the county: built in 1970, earlier than 93 of Warren's 268 bridges with a recorded construction year (35%), against a county median build year of 1953. This is one of the newer structures in its county.
Live comparison across New Jersey bridges with a recorded inventory load rating (6,826 of 6,827 rated).
CO RT 521 vs every rated New Jersey bridge
Inventory load rating (metric tons), FHWA NBI, this state
43 Top 45% higher than 55% of 6,826 bridges
rated New Jersey 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.
Warren inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 268 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
- 1970
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 12.2 m (40 ft) 0
- Owner
- County Highway Agency
- Avg Daily Traffic
- 4,024 vehicles/day
- Structure Number
- 2101105
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 CO RT 521 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 CO RT 521 against other structures in Warren and across New Jersey. New Jersey 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 CO RT 521?
CO RT 521 in Warren, New Jersey on the FHWA's 0–9 scale.
How often is CO RT 521 inspected?
CO RT 521'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 4,024 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CO RT 521 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for CO RT 521?
CO RT 521 has an NBI inventory load rating of 42.6 metric tons.
Who is responsible for maintaining CO RT 521?
CO RT 521 is owned and maintained by County Highway Agency.
How old is CO RT 521 and does age affect safety?
CO RT 521 was built in 1970, making it 56 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.
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.