US Bridges

Cider Mill Road over Neshanic River

FairPosted for load

Hunterdon County, New Jersey · 1.25 MI South of CR 514 · Structure no. 10XX233

Built
1900
125 years old
Condition
Fair
inspected July 2023
Type
Truss - Thru
Aluminum, Wrought Iron, or Cast Iron
Length
85 ft
1 main span
Daily traffic
208
2021 count
Owner
County
County Highway Agency

About this bridge

Cider Mill Road over Neshanic River is a aluminum, wrought iron, or cast iron truss - thru carrying Cider Mill Road over Neshanic 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 208 vehicles a day, projected to reach 254 by 2041. The structure is 85 ft (25.9 m) long and 16 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCider Mill Road
CrossesNeshanic River
Location1.25 MI South of CR 514
RouteCity Street 0
CountyHunterdon County
StateNew Jersey
Coordinates40.46596, -74.79267
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating19 US tons
Inventory rating14 US tons

Structure

Structure typeTruss - Thru
MaterialAluminum, Wrought Iron, or Cast Iron
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length85 ft (25.9 m)
Longest span82 ft (25 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deck10 ft (3.2 m)

Traffic and service

Average daily traffic208 (2021)
Projected traffic254 by 2041
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$1.8 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cider Mill Road over Neshanic River built?

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

What condition is Cider Mill Road over Neshanic River 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 July 2023.

How much traffic does Cider Mill Road over Neshanic River carry?

About 208 vehicles per day (2021 count).

How long is Cider Mill Road over Neshanic River?

The structure is 85 ft (25.9 m) long with a longest span of 82 ft (25 m) and a deck 16 ft wide.

Who owns Cider Mill Road over Neshanic River?

It is owned by the County Highway Agency.