Structure 1017155 · Hunterdon County, NJ

I-78 EB US 22 EB over Beaver Brook

Carries I-78 EB US 22 EB over Beaver Brook, 0.15 Mi W Of I-78 Ext. 17.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT55 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

55 ft end to end, longest span 22 ft. 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 slab bridge.

Built1927rebuilt 1967
Length55.1 ft16.8 m
Daily traffic63,560counted 2024
Last inspectedAugust 2024every 24 months

Location

StateNew Jersey
CountyHunterdon
Location0.15 Mi W Of I-78 Ext. 17
CarriesI-78 EB US 22 EB
CrossesBeaver Brook
Coordinates40.63818, -74.89038

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length55.1 ft (16.8 m)
Max Span22.0 ft (6.7 m)
Deck Width56.1 ft (17.1 m)
Deck Area287.3 sq m
Main Spans2
Year Built1927 (reconstructed 1967)

Traffic

Avg Daily Traffic63,560 (2024)
Truck Traffic9%
Lanes On Bridge3

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1017155

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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