Structure 1123152 · Mercer County, NJ

US 130 over Rocky Brook

Carries US 130 over Rocky Brook, 0.35 Mi N Of CR 571 Jct.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
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 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

56 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.

Built1936rebuilt 2006
Length56.1 ft17.1 m
Daily traffic35,803counted 2024
Last inspectedJuly 2024every 24 months

Location

StateNew Jersey
CountyMercer
Location0.35 Mi N Of CR 571 Jct
CarriesUS 130
CrossesRocky Brook
Coordinates40.27688, -74.53426

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length56.1 ft (17.1 m)
Max Span53.1 ft (16.2 m)
Deck Width104.7 ft (31.9 m)
Deck Area545.5 sq m
Main Spans1
Year Built1936 (reconstructed 2006)

Traffic

Avg Daily Traffic35,803 (2024)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number1123152

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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