US Bridges

Pine Hill Road over Plum Brook

Fair

Hunterdon County, New Jersey · 0.4 Mi.N. of Pavlica Road · Structure no. 1000112

Built
2001
24 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
192
2023 count
Owner
County
County Highway Agency

About this bridge

Pine Hill Road over Plum Brook is a steel stringer/multi-beam or girder carrying Pine Hill Road over Plum Brook in Hunterdon County, New Jersey. It was built in 2001, so it is 24 years old, younger than the New Jersey average of 58.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 192 vehicles a day, roughly 3% of them trucks, projected to reach 234 by 2043. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesPine Hill Road
CrossesPlum Brook
Location0.4 Mi.N. of Pavlica Road
CountyHunterdon County
StateNew Jersey
Coordinates40.46193, -74.96775
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic192 (2023)
Projected traffic234 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pine Hill Road over Plum Brook built?

It was built in 2001, making it 24 years old in 2025.

What condition is Pine Hill Road over Plum Brook in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Pine Hill Road over Plum Brook carry?

About 192 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Pine Hill Road over Plum Brook?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 24 ft wide.

Who owns Pine Hill Road over Plum Brook?

It is owned by the County Highway Agency.