Structure 1410001 · Morris County, NJ

Melanie Lane over Whippany River

Carries Melanie Lane over Whippany River, 0.03 Mile N Of CR 632.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT91 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

91 ft end to end. 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.

Built201511 years old
Length90.9 ft27.7 m
Daily traffic6,075counted 2023
Last inspectedJuly 2023every 24 months

Location

StateNew Jersey
CountyMorris
Location0.03 Mile N Of CR 632
CarriesMelanie Lane
CrossesWhippany River
Coordinates40.81530, -74.38725

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length90.9 ft (27.7 m)
Max Span86.0 ft (26.2 m)
Deck Width49.2 ft (15 m)
Deck Area415.5 sq m
Main Spans1
Year Built2015

Traffic

Avg Daily Traffic6,075 (2023)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number1410001

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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