US Bridges

Nj 31 & US 202 over 3rd Neshanic River

Fair

Hunterdon County, New Jersey · 2.0 MI S of Rt 12 JCT · Structure no. 1011154

Built
1964
61 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
35,802
2022 count
Owner
State
State Highway Agency

About this bridge

Nj 31 & US 202 over 3rd Neshanic River is a prestressed concrete stringer/multi-beam or girder carrying Nj 31 & US 202 over 3rd Neshanic River in Hunterdon County, New Jersey. It was built in 1964, so it is 61 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 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 35,802 vehicles a day, roughly 4% of them trucks, projected to reach 50,520 by 2042. The structure is 70 ft (21.3 m) long and 95 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNj 31 & US 202
Crosses3rd Neshanic River
Location2.0 MI S of Rt 12 JCT
RouteU.S. Route 202
Coordinates40.47474, -74.86273
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating32 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span63 ft (19.2 m)
Deck width95 ft (29.1 m)
Roadway width79 ft (24.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,802 (2022)
Projected traffic50,520 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nj 31 & US 202 over 3rd Neshanic River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Nj 31 & US 202 over 3rd 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 May 2024.

How much traffic does Nj 31 & US 202 over 3rd Neshanic River carry?

About 35,802 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Nj 31 & US 202 over 3rd Neshanic River?

The structure is 70 ft (21.3 m) long with a longest span of 63 ft (19.2 m) and a deck 95 ft wide.

Who owns Nj 31 & US 202 over 3rd Neshanic River?

It is owned by the State Highway Agency.