Structure 832157 · Gloucester County, NJ

Nj Route 55 SB over Mantua Creek

Carries Nj Route 55 SB over Mantua Creek, 2.05 Mi South Of Exit 56.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT285 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

285 ft end to end, longest span 92 ft: about 4 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.

Built198442 years old
Length285.1 ft86.9 m
Daily traffic29,563counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateNew Jersey
CountyGloucester
Location2.05 Mi South Of Exit 56
CarriesNj Route 55 SB
CrossesMantua Creek
Coordinates39.76603, -75.12079

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length285.1 ft (86.9 m)
Max Span91.9 ft (28 m)
Deck Width47.6 ft (14.5 m)
Deck Area1260.0 sq m
Main Spans3
Year Built1984

Traffic

Avg Daily Traffic29,563 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number0832157

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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