GRIGGSTOWN CAUSWY
Carrying GRIGGSTOWN CAUSWY over MILLSTONE RIVER
At CR 533 Intersection, Somerset, New Jersey
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
GRIGGSTOWN CAUSWY in Somerset, New Jersey sits above 88% of rated New Jersey bridges on inventory load rating (65 t), while its 1978 build year is earlier than 42% of Somerset's recorded-year cohort (397 bridges).
GRIGGSTOWN CAUSWY in Somerset, New Jersey is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1978, it carries 3 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 NJ:18F0302
INTERSTATE-ERA · STEEL · MULTI-SPAN · DECK-LED · ARTERIAL-ADT · HEAVY-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 2 spans
- DECK-LED Deck-led
- ARTERIAL-ADT Arterial 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.
Bridge Snapshot: GRIGGSTOWN CAUSWY
The GRIGGSTOWN CAUSWY bridge in Somerset, New Jersey carries GRIGGSTOWN CAUSWY over MILLSTONE RIVER. It was built in 1978, making it 48 years old today. It was last reconstructed in 2006, extending its service life. The structure is built primarily of steel and spans 2 sections, stretching 30.5 meters (100 feet) end to end. Daily traffic averages 6,198 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 a deck rating of 6/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in fair condition. All reported major components score above the Poor range.
How GRIGGSTOWN CAUSWY compares
Age against the county: built in 1978, earlier than 166 of Somerset's 397 bridges with a recorded construction year (42%), against a county median build year of 1968. 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).
GRIGGSTOWN CAUSWY vs every rated New Jersey bridge
Inventory load rating (metric tons), FHWA NBI, this state
65 Top 12% higher than 88% 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.
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.
Somerset inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 397 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
- 1978
- Last Reconstructed
- 2006
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 30.5 m (100 ft)
- Deck Width
- 4.9 m (16 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 6,198 vehicles/day
- Structure Number
- 18F0302
Condition Analysis
- • The deck (driving surface) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
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 GRIGGSTOWN CAUSWY 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 GRIGGSTOWN CAUSWY against other structures in Somerset 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 GRIGGSTOWN CAUSWY?
GRIGGSTOWN CAUSWY in Somerset, New Jersey has a deck rating of 6/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is GRIGGSTOWN CAUSWY inspected?
GRIGGSTOWN CAUSWY'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 6,198 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. GRIGGSTOWN CAUSWY 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 GRIGGSTOWN CAUSWY?
GRIGGSTOWN CAUSWY has an NBI inventory load rating of 65.3 metric tons.
Who is responsible for maintaining GRIGGSTOWN CAUSWY?
GRIGGSTOWN CAUSWY is owned and maintained by County Highway Agency.
How old is GRIGGSTOWN CAUSWY and does age affect safety?
GRIGGSTOWN CAUSWY was built in 1978, making it 48 years old and last reconstructed in 2006.
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.