Structure 717157 · Essex County, NJ

Route Nj 21 over Water Mains

Carries Route Nj 21 over Water Mains, 0.8 Mi S Of 3-21 Jct.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT76 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

76 ft end to end, longest span 35 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 rigid-frame bridge.

Built196165 years old
Length76.1 ft23.2 m
Daily traffic75,430counted 2023
Last inspectedFebruary 2023every 24 months

Location

StateNew Jersey
CountyEssex
Location0.8 Mi S Of 3-21 Jct
CarriesRoute Nj 21
CrossesWater Mains
Coordinates40.81910, -74.13597

Physical Characteristics

MaterialConcrete Continuous
DesignFrame
Total Length76.1 ft (23.2 m)
Max Span35.1 ft (10.7 m)
Deck Width110.6 ft (33.7 m)
Deck Area781.8 sq m
Main Spans2
Year Built1961

Traffic

Avg Daily Traffic75,430 (2023)
Truck Traffic5%
Lanes On Bridge6

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0717157

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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