Structure 1212153 · Middlesex County, NJ

Nj 18 NB over Conrail

Carries Nj 18 NB over Conrail, 2.0 Mi S Of Njtpk Jct.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT112 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

112 ft end to end, longest span 36 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.

Built193195 years old
Length111.9 ft34.1 m
Daily traffic34,578counted 2022
Last inspectedAugust 2024every 24 months

Location

StateNew Jersey
CountyMiddlesex
Location2.0 Mi S Of Njtpk Jct
CarriesNj 18 NB
CrossesConrail
Coordinates40.44391, -74.39501

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length111.9 ft (34.1 m)
Max Span36.1 ft (11 m)
Deck Width64.3 ft (19.6 m)
Deck Area668.4 sq m
Main Spans3
Year Built1931

Traffic

Avg Daily Traffic34,578 (2022)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1212153

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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