US Bridges

Access Road over Third Neshanic River

Fair

Hunterdon County, New Jersey · 1.1 MI S of 202-611 JCT · Structure no. 1011153

Built
1925
100 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
2 main spans
Daily traffic
27
2023 count
Owner
State
State Highway Agency

About this bridge

Access Road over Third Neshanic River is a steel stringer/multi-beam or girder carrying Access Road over Third Neshanic River in Hunterdon County, New Jersey. It was built in 1925, so it is 100 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.

It carries about 27 vehicles a day, roughly 3% of them trucks, projected to reach 32 by 2043. The structure is 63 ft (19.2 m) long and 33 ft wide.

CarriesAccess Road
CrossesThird Neshanic River
Location1.1 MI S of 202-611 JCT
Coordinates40.47462, -74.86312
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span29 ft (8.8 m)
Deck width33 ft (10.1 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2023)
Projected traffic32 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Access Road over Third Neshanic River built?

It was built in 1925, making it 100 years old in 2025.

What condition is Access Road over Third 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 February 2023.

How much traffic does Access Road over Third Neshanic River carry?

About 27 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Access Road over Third Neshanic River?

The structure is 63 ft (19.2 m) long with a longest span of 29 ft (8.8 m) and a deck 33 ft wide.

Who owns Access Road over Third Neshanic River?

It is owned by the State Highway Agency.