Structure 10XXF76 · Hunterdon County, NJ

Old Clinton Road over S Branch Raritan River

Carries Old Clinton Road over S Branch Raritan River, 0.38 Mi West Of Lilac DR.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT128 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

128 ft end to end, longest span 62 ft. 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 through truss.

Built1901rebuilt 1991
Length128.0 ft39 m
Daily traffic148counted 2023
Last inspectedJune 2023every 24 months

Location

StateNew Jersey
CountyHunterdon
Location0.38 Mi West Of Lilac DR
CarriesOld Clinton Road
CrossesS Branch Raritan River
Coordinates40.57967, -74.88056

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length128.0 ft (39 m)
Max Span62.0 ft (18.9 m)
Deck Width16.1 ft (4.9 m)
Deck Area191.1 sq m
Main Spans2
Year Built1901 (reconstructed 1991)

Traffic

Avg Daily Traffic148 (2023)
Truck Traffic3%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number10XXF76

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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