Structure 1814160 · Somerset County, NJ

Cedar Brook RD over I-287 NB

Carries Cedar Brook RD over I-287 NB, 1.1 Mi S Of I-78 Jct.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT179 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

179 ft end to end, longest span 78 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 1996
Length179.1 ft54.6 m
Daily traffic3,330counted 2023
Last inspectedFebruary 2023every 24 months

Location

StateNew Jersey
CountySomerset
Location1.1 Mi S Of I-78 Jct
CarriesCedar Brook RD
CrossesI-287 NB
Coordinates40.62698, -74.64082

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length179.1 ft (54.6 m)
Max Span78.1 ft (23.8 m)
Deck Width44.6 ft (13.6 m)
Deck Area742.6 sq m
Main Spans3
Year Built1963 (reconstructed 1996)

Traffic

Avg Daily Traffic3,330 (2023)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number1814160

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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