Structure 1130156 · Mercer County, NJ

29nb Ramp To 129nb over Nj 129 NB & Nj Transit

Carries 29nb Ramp To 129nb over Nj 129 NB & Nj Transit, 1.64mi N Of I-295&NJ29JCT.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT465 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

465 ft end to end, longest span 145 ft: about 6 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built199531 years old
Length464.9 ft141.7 m
Daily traffic13,252counted 2024
Last inspectedJuly 2024every 24 months

Location

StateNew Jersey
CountyMercer
Location1.64mi N Of I-295&NJ29JCT
Carries29nb Ramp To 129nb
CrossesNj 129 NB & Nj Transit
Coordinates40.19284, -74.75090

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length464.9 ft (141.7 m)
Max Span145.0 ft (44.2 m)
Deck Width33.5 ft (10.2 m)
Deck Area1445.3 sq m
Main Spans3
Year Built1995

Traffic

Avg Daily Traffic13,252 (2024)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number1130156

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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