Structure 1812158 · Somerset County, NJ

Route I-287 over Canal RD D&r Raritan&rr

Carries Route I-287 over Canal RD D&r Raritan&rr, 1.2mi South Of RT 28.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,370 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

1,370 ft end to end, longest span 90 ft: about 3.8 football fields. 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.

Built1960rebuilt 1986
Length1370.1 ft417.6 m
Daily traffic159,760counted 2023
Last inspectedApril 2023every 24 months

Location

StateNew Jersey
CountySomerset
Location1.2mi South Of RT 28
CarriesRoute I-287
CrossesCanal RD D&r Raritan&rr
Coordinates40.55338, -74.54363

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1370.1 ft (417.6 m)
Max Span89.9 ft (27.4 m)
Deck Width95.1 ft (29 m)
Deck Area12110.4 sq m
Main Spans19
Year Built1960 (reconstructed 1986)

Traffic

Avg Daily Traffic159,760 (2023)
Truck Traffic9%
Lanes On Bridge6
Lanes Under Bridge3

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1812158

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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