Structure 18E0902 · Somerset County, NJ

Garretson Road over Peters Brook

Carries Garretson Road over Peters Brook, 0.45 Mi West Of I-287.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
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 FT43 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

43 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 slab bridge.

Built196165 years old
Length43.0 ft13.1 m
Daily traffic4,703counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateNew Jersey
CountySomerset
Location0.45 Mi West Of I-287
CarriesGarretson Road
CrossesPeters Brook
Coordinates40.59348, -74.63030

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length43.0 ft (13.1 m)
Max Span42.0 ft (12.8 m)
Deck Width55.8 ft (17 m)
Deck Area222.7 sq m
Main Spans1
Year Built1961

Traffic

Avg Daily Traffic4,703 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number18E0902

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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