Structure 1241150 · Middlesex County, NJ

Nj 184 over US 9

Carries Nj 184 over US 9, At Jct Of Nj 184 & US 9.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT103 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

103 ft end to end, longest span 49 ft. 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 multi-beam bridge.

Built193888 years old
Length103.0 ft31.4 m
Daily traffic29,667counted 2023
Last inspectedApril 2023every 24 months

Location

StateNew Jersey
CountyMiddlesex
LocationAt Jct Of Nj 184 & US 9
CarriesNj 184
CrossesUS 9
Coordinates40.53454, -74.29736

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length103.0 ft (31.4 m)
Max Span48.9 ft (14.9 m)
Deck Width55.4 ft (16.9 m)
Deck Area530.7 sq m
Main Spans2
Year Built1938

Traffic

Avg Daily Traffic29,667 (2023)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1241150

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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