Structure 18B0511 · Somerset County, NJ

Woodfern Road over S. Branch Raritan River

Carries Woodfern Road over S. Branch Raritan River, 0.89 Mi North Of CR 514.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT103 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

103 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 through truss.

Built1902rebuilt 2006
Length103.0 ft31.4 m
Daily traffic1,083counted 2023
Last inspectedAugust 2023every 24 months

Location

StateNew Jersey
CountySomerset
Location0.89 Mi North Of CR 514
CarriesWoodfern Road
CrossesS. Branch Raritan River
Coordinates40.50488, -74.76363

Physical Characteristics

MaterialAluminum/Wrought Iron/Cast Iron
DesignTruss - Thru
Total Length103.0 ft (31.4 m)
Max Span99.1 ft (30.2 m)
Deck Width15.1 ft (4.6 m)
Deck Area144.4 sq m
Main Spans1
Year Built1902 (reconstructed 2006)

Traffic

Avg Daily Traffic1,083 (2023)
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number18B0511

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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