Structure 1000Q1A · Hunterdon County, NJ

Copper Hill Road over Third Neshanic River

Carries Copper Hill Road over Third Neshanic River, .5 Mile West Of US 202.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

27 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built1900rebuilt 1995
Length26.9 ft8.2 m
Daily traffic445counted 2023
Last inspectedMarch 2023every 24 months

Location

StateNew Jersey
CountyHunterdon
Location.5 Mile West Of US 202
CarriesCopper Hill Road
CrossesThird Neshanic River
Coordinates40.46792, -74.86660

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length26.9 ft (8.2 m)
Max Span25.9 ft (7.9 m)
Deck Width27.6 ft (8.4 m)
Deck Area68.9 sq m
Main Spans1
Year Built1900 (reconstructed 1995)

Traffic

Avg Daily Traffic445 (2023)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number1000Q1A

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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