Structure 1415156 · Morris County, NJ

I80 WB over Hook Mtn. Road

Carries I80 WB over Hook Mtn. Road, 1.3 Mi East Of RTE 46.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT86 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

86 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 multi-beam bridge.

Built196759 years old
Length86.0 ft26.2 m
Daily traffic47,340counted 2024
Last inspectedMarch 2024every 24 months

Location

StateNew Jersey
CountyMorris
Location1.3 Mi East Of RTE 46
CarriesI80 WB
CrossesHook Mtn. Road
Coordinates40.86186, -74.33970

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length86.0 ft (26.2 m)
Max Span80.1 ft (24.4 m)
Deck Width56.1 ft (17.1 m)
Deck Area448.0 sq m
Main Spans1
Year Built1967

Traffic

Avg Daily Traffic47,340 (2024)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number1415156

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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