Structure 18M0906 · Somerset County, NJ

Grove Street over Green Brook

Carries Grove Street over Green Brook, 250 Ft N Of W. Front ST.

Overall conditionFair

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

How ratings work
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT52 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 5/9Substructure 5/9

52 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 deck arch.

Built1916110 years old
Length51.8 ft15.8 m
Daily traffic9,245counted 2023
Last inspectedOctober 2023every 24 months

Location

StateNew Jersey
CountySomerset
Location250 Ft N Of W. Front ST
CarriesGrove Street
CrossesGreen Brook
Coordinates40.61714, -74.42695

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length51.8 ft (15.8 m)
Max Span51.8 ft (15.8 m)
Deck Width59.7 ft (18.2 m)
Deck Area287.6 sq m
Main Spans1
Year Built1916

Traffic

Avg Daily Traffic9,245 (2023)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number18M0906

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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