Structure M06051C · Mercer County, NJ

Njtpk Ramp ST over Njtpk

Carries Njtpk Ramp ST over Njtpk, At Interchange 7a.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT466 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

466 ft end to end, longest span 175 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.

Built201214 years old
Length465.9 ft142 m
Daily traffic6,371counted 2024
Last inspectedJune 2024every 24 months

Location

StateNew Jersey
CountyMercer
LocationAt Interchange 7a
CarriesNjtpk Ramp ST
CrossesNjtpk
Coordinates40.19550, -74.59581

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length465.9 ft (142 m)
Max Span174.9 ft (53.3 m)
Deck Width44.0 ft (13.4 m)
Deck Area1902.8 sq m
Main Spans3
Year Built2012

Traffic

Avg Daily Traffic6,371 (2024)
Truck Traffic10%
Lanes On Bridge2
Lanes Under Bridge14

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberM06051C

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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