Structure 3300021 · Mercer County, NJ

US RT 1 over Nj 29 NB

Carries US RT 1 over Nj 29 NB, At RT 1 & RT 29 NB Jct.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT118 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

118 ft end to end, longest span 61 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.

Built1965rebuilt 2009
Length118.1 ft36 m
Daily traffic53,000counted 2022
Last inspectedJune 2023every 24 months

Location

StateNew Jersey
CountyMercer
LocationAt RT 1 & RT 29 NB Jct
CarriesUS RT 1
CrossesNj 29 NB
Coordinates40.20997, -74.76611

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length118.1 ft (36 m)
Max Span61.0 ft (18.6 m)
Deck Width102.4 ft (31.2 m)
Deck Area1123.2 sq m
Main Spans3
Year Built1965 (reconstructed 2009)

Traffic

Avg Daily Traffic53,000 (2022)
Truck Traffic7%
Lanes On Bridge5
Lanes Under Bridge3

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerPrivate
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number3300021

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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