Structure 1130150 · Mercer County, NJ

Route Nj 29 NB over Wetlands

Carries Route Nj 29 NB over Wetlands, 0.1 Mi West Of Rt.i-295.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT963 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

963 ft end to end, longest span 60 ft: about 2.7 football fields. 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
Length962.9 ft293.5 m
Daily traffic30,480counted 2024
Last inspectedMarch 2024every 24 months

Location

StateNew Jersey
CountyMercer
Location0.1 Mi West Of Rt.i-295
CarriesRoute Nj 29 NB
CrossesWetlands
Coordinates40.18384, -74.72284

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length962.9 ft (293.5 m)
Max Span60.0 ft (18.3 m)
Deck Width56.4 ft (17.2 m)
Deck Area5048.2 sq m
Main Spans16
Year Built1995

Traffic

Avg Daily Traffic30,480 (2024)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1130150

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.

Nearby Bridges