Structure 3300020 · Mercer County, NJ

US 1 over Pa32 Nj29sb Nsrc Delr

Carries US 1 over Pa32 Nj29sb Nsrc Delr, Trenton.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,325 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

1,325 ft end to end, longest span 112 ft: about 3.7 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.

Built1952rebuilt 2009
Length1325.1 ft403.9 m
Daily traffic62,951counted 2021
Last inspectedJune 2023every 24 months

Location

StateNew Jersey
CountyMercer
LocationTrenton
CarriesUS 1
CrossesPa32 Nj29sb Nsrc Delr
Coordinates40.20830, -74.76830

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1325.1 ft (403.9 m)
Max Span111.9 ft (34.1 m)
Deck Width82.3 ft (25.1 m)
Deck Area10137.9 sq m
Main Spans12
Year Built1952 (reconstructed 2009)

Traffic

Avg Daily Traffic62,951 (2021)
Truck Traffic7%
Lanes On Bridge6
Lanes Under Bridge5

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number3300020

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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