Structure 1000055 · Hunterdon County, NJ

Arch Street over So. Branch Raritan River

Carries Arch Street over So. Branch Raritan River, 40 Ft. East County RT 513.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 8/9Substructure 6/9 · sets the rating

94 ft end to end, longest span 47 ft. 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 box-beam bridge.

Built200620 years old
Length94.2 ft28.7 m
Daily traffic3,993counted 2023
Last inspectedMay 2023every 24 months

Location

StateNew Jersey
CountyHunterdon
Location40 Ft. East County RT 513
CarriesArch Street
CrossesSo. Branch Raritan River
Coordinates40.66355, -74.89732

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length94.2 ft (28.7 m)
Max Span46.9 ft (14.3 m)
Deck Width36.4 ft (11.1 m)
Deck Area318.6 sq m
Main Spans2
Year Built2006

Traffic

Avg Daily Traffic3,993 (2023)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1000055

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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