Structure 1323153 · Monmouth County, NJ

Nj 18 Northbound over Hamilton Road

Carries Nj 18 Northbound over Hamilton Road, 0.61 Miles S. Of Gs Pky.

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
CAR · 15 FT112 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

112 ft end to end. Lengths and the car 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.

Built197947 years old
Length111.9 ft34.1 m
Daily traffic21,438counted 2023
Last inspectedJune 2023every 24 months

Location

StateNew Jersey
CountyMonmouth
Location0.61 Miles S. Of Gs Pky
CarriesNj 18 Northbound
CrossesHamilton Road
Coordinates40.28321, -74.09733

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length111.9 ft (34.1 m)
Max Span107.9 ft (32.9 m)
Deck Width48.2 ft (14.7 m)
Deck Area501.3 sq m
Main Spans1
Year Built1979

Traffic

Avg Daily Traffic21,438 (2023)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number1323153

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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