Structure 2001013 · Union County, NJ

Plainfield Avenue over Green Brook

Carries Plainfield Avenue over Green Brook, 0.19 Miles North Of I-78.

Overall conditionFair

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

How ratings work
Culvertsets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 5/9

A culvert 30 ft across. 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, so those are drawn as typical for a culvert.

Built1916rebuilt 1968
Length29.9 ft9.1 m
Daily traffic9,918counted 2024
Last inspectedMarch 2024every 24 months

Location

StateNew Jersey
CountyUnion
Location0.19 Miles North Of I-78
CarriesPlainfield Avenue
CrossesGreen Brook
Coordinates40.66378, -74.42871

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length29.9 ft (9.1 m)
Max Span21.0 ft (6.4 m)
Deck Width49.9 ft (15.2 m)
Deck Area138.3 sq m
Main Spans1
Year Built1916 (reconstructed 1968)

Traffic

Avg Daily Traffic9,918 (2024)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number2001013

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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