Structure M079040 · Middlesex County, NJ

Nj Tpk Sani Rwy over Nj Tpk Sno Roadway

Carries Nj Tpk Sani Rwy over Nj Tpk Sno Roadway, 5 Mi North Of Int 8a.

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
SEMI-TRUCK · 72 FT337 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

337 ft end to end, longest span 108 ft: about 5 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.

Built199036 years old
Length336.9 ft102.7 m
Daily traffic8,200counted 2023
Last inspectedMarch 2023every 24 months

Location

StateNew Jersey
CountyMiddlesex
Location5 Mi North Of Int 8a
CarriesNj Tpk Sani Rwy
CrossesNj Tpk Sno Roadway
Coordinates40.42171, -74.44187

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length336.9 ft (102.7 m)
Max Span107.9 ft (32.9 m)
Deck Width29.9 ft (9.1 m)
Deck Area934.6 sq m
Main Spans3
Year Built1990

Traffic

Avg Daily Traffic8,200 (2023)
Truck Traffic1%
Lanes On Bridge1
Lanes Under Bridge3

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberM079040

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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