Structure 1817153 · Somerset County, NJ

I-78 EB over I-287 NB

Carries I-78 EB over I-287 NB, At I-287 Interchange.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT162 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

162 ft end to end, longest span 117 ft: about 2 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.

Built1963rebuilt 2007
Length162.1 ft49.4 m
Daily traffic57,656counted 2023
Last inspectedMarch 2023every 24 months

Location

StateNew Jersey
CountySomerset
LocationAt I-287 Interchange
CarriesI-78 EB
CrossesI-287 NB
Coordinates40.64246, -74.64526

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length162.1 ft (49.4 m)
Max Span117.1 ft (35.7 m)
Deck Width54.8 ft (16.7 m)
Deck Area825.0 sq m
Main Spans3
Year Built1963 (reconstructed 2007)

Traffic

Avg Daily Traffic57,656 (2023)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number1817153

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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