US Bridges

Pine Hill Road over South Br Raritan River

PoorPosted for load

Hunterdon County, New Jersey · 1.6 Miles West of Nj 31 · Structure no. 100FC80

Built
1900
125 years old
Condition
Poor
inspected March 2023
Type
Truss - Thru
Steel
Length
92 ft
2 main spans
Daily traffic
159
2023 count
Owner
County
County Highway Agency

About this bridge

Pine Hill Road over South Br Raritan River is a steel truss - thru carrying Pine Hill Road over South Br Raritan River in Hunterdon County, New Jersey. It was built in 1900, so it is 125 years old, older than the New Jersey average of 58.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 159 vehicles a day, projected to reach 190 by 2043. The structure is 92 ft (28 m) long and 12 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesPine Hill Road
CrossesSouth Br Raritan River
Location1.6 Miles West of Nj 31
Coordinates40.59839, -74.90489
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating7.1 US tons
Inventory rating4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans2
Design loadUnknown
Structure length92 ft (28 m)
Longest span44 ft (13.4 m)
Deck width12 ft (3.6 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2023)
Projected traffic190 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Pine Hill Road over South Br Raritan River built?

It was built in 1900, making it 125 years old in 2025.

What condition is Pine Hill Road over South Br Raritan River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does Pine Hill Road over South Br Raritan River carry?

About 159 vehicles per day (2023 count).

How long is Pine Hill Road over South Br Raritan River?

The structure is 92 ft (28 m) long with a longest span of 44 ft (13.4 m) and a deck 12 ft wide.

Who owns Pine Hill Road over South Br Raritan River?

It is owned by the County Highway Agency.