HAMILTON ROAD
Carrying HAMILTON ROAD over NEW YORK BRNCH (CONRAIL)
6.1MI S OF US22&I287 JCT, Somerset, New Jersey
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
HAMILTON ROAD in Somerset, New Jersey sits above 2% of rated New Jersey bridges on inventory load rating (15 t), while its 1918 build year is earlier than 92% of Somerset's recorded-year cohort (397 bridges).
HAMILTON ROAD in Somerset, New Jersey is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1918, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor 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:1850166
PRE-1950 · STEEL · SINGLE-SPAN · DECK-LED · ARTERIAL-ADT · LIGHT-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- STEEL Steel
- SINGLE-SPAN Single span
- DECK-LED Deck-led
- ARTERIAL-ADT Arterial ADT
- LIGHT-LOAD Light load
- CAT-POOR Poor
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: HAMILTON ROAD
The HAMILTON ROAD bridge in Somerset, New Jersey carries HAMILTON ROAD over NEW YORK BRNCH (CONRAIL). It was built in 1918, making it 108 years old today. The structure is built primarily of steel and spans 1 section, stretching 29.9 meters (98 feet) end to end. Daily traffic averages 6,429 vehicles, placing it in the moderately-trafficked tier of New Jersey bridges. It is owned and maintained by Unknown.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 5/9, substructure at 5/9. 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.
How HAMILTON ROAD compares
Age against the county: built in 1918, earlier than 366 of Somerset's 397 bridges with a recorded construction year (92%), against a county median build year of 1968. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across New Jersey bridges with a recorded inventory load rating (6,826 of 6,827 rated).
HAMILTON ROAD vs every rated New Jersey bridge
Inventory load rating (metric tons), FHWA NBI, this state
15 Top 98% higher than 2% 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
- 1918
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 29.9 m (98 ft)
- Deck Width
- 8.1 m (27 ft)
- Owner
- Unknown
- Avg Daily Traffic
- 6,429 vehicles/day
- Structure Number
- 1850166
Condition Analysis
- • The deck (driving surface) is in poor condition (4/9), showing advanced deterioration on the inspecting agency's 0-9 scale.
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
HAMILTON ROAD 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 HAMILTON ROAD 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 HAMILTON ROAD?
HAMILTON ROAD in Somerset, New Jersey has a deck rating of 4/9, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is HAMILTON ROAD inspected?
HAMILTON ROAD'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 6,429 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HAMILTON ROAD 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 HAMILTON ROAD?
HAMILTON ROAD has an NBI inventory load rating of 15.4 metric tons.
Who is responsible for maintaining HAMILTON ROAD?
HAMILTON ROAD is owned and maintained by Unknown.
How old is HAMILTON ROAD and does age affect safety?
HAMILTON ROAD was built in 1918, making it 108 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.
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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.