Structure 1209155 · Middlesex County, NJ

US RT 9 NB over Raritan River Smith St.

Carries US RT 9 NB over Raritan River Smith St., 1.1 Mi. S Of Nj 440.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
4,392 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

4,392 ft end to end, longest span 250 ft: about 12 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built200323 years old
Length4392.1 ft1338.7 m
Daily traffic46,321counted 2023
Last inspectedJuly 2023every 24 months

Location

StateNew Jersey
CountyMiddlesex
Location1.1 Mi. S Of Nj 440
CarriesUS RT 9 NB
CrossesRaritan River Smith St.
Coordinates40.50378, -74.30053

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length4392.1 ft (1338.7 m)
Max Span250.0 ft (76.2 m)
Deck Width52.5 ft (16 m)
Deck Area21419.2 sq m
Main Spans9
Year Built2003

Traffic

Avg Daily Traffic46,321 (2023)
Truck Traffic4%
Lanes On Bridge3
Lanes Under Bridge5

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1209155

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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