Structure 717150 · Essex County, NJ

RT Nj 21 over Rutgers-rt506 & Main ST

Carries RT Nj 21 over Rutgers-rt506 & Main ST, 3 Mi N Of Rts 280-21 Jct.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT243 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

243 ft end to end, longest span 120 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built195868 years old
Length243.1 ft74.1 m
Daily traffic77,020counted 2023
Last inspectedFebruary 2023every 24 months

Location

StateNew Jersey
CountyEssex
Location3 Mi N Of Rts 280-21 Jct
CarriesRT Nj 21
CrossesRutgers-rt506 & Main ST
Coordinates40.78622, -74.14841

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length243.1 ft (74.1 m)
Max Span120.1 ft (36.6 m)
Deck Width86.6 ft (26.4 m)
Deck Area1956.2 sq m
Main Spans2
Year Built1958

Traffic

Avg Daily Traffic77,020 (2023)
Truck Traffic5%
Lanes On Bridge6
Lanes Under Bridge7

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 Number0717150

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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