Structure 1409155 · Morris County, NJ

US 46 over Njt Rckwy Rvr W Blkwll

Carries US 46 over Njt Rckwy Rvr W Blkwll, 1.7 Mi S I-80&NJ15 Jct.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT550 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

550 ft end to end, longest span 150 ft: about 1.5 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.

Built201115 years old
Length549.9 ft167.6 m
Daily traffic17,555counted 2023
Last inspectedFebruary 2023every 24 months

Location

StateNew Jersey
CountyMorris
Location1.7 Mi S I-80&NJ15 Jct
CarriesUS 46
CrossesNjt Rckwy Rvr W Blkwll
Coordinates40.88556, -74.56500

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length549.9 ft (167.6 m)
Max Span149.9 ft (45.7 m)
Deck Width83.7 ft (25.5 m)
Deck Area4273.8 sq m
Main Spans4
Year Built2011

Traffic

Avg Daily Traffic17,555 (2023)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge1

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1409155

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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