US Bridges

Njtpk Sni/Nsi Rdwy over Conrail Jamesburg Br

Fair

Middlesex County, New Jersey · .4 MI N Interchange 8A · Structure no. M074310

Built
1950
75 years old, rebuilt 1955
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
125 ft
3 main spans
Daily traffic
109,530
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Njtpk Sni/Nsi Rdwy over Conrail Jamesburg Br is a steel stringer/multi-beam or girder carrying Njtpk Sni/Nsi Rdwy over Conrail Jamesburg Br in Middlesex County, New Jersey. It was built in 1950 and reconstructed in 1955, so it is 75 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 109,530 vehicles a day, roughly 1% of them trucks, projected to reach 116,594 by 2043. The structure is 125 ft (38.1 m) long and 128 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNjtpk Sni/Nsi Rdwy
CrossesConrail Jamesburg Br
Location.4 MI N Interchange 8A
RouteInterstate 95
CountyMiddlesex County
StateNew Jersey
Coordinates40.35679, -74.47046
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length125 ft (38.1 m)
Longest span42 ft (12.8 m)
Deck width128 ft (39 m)
Roadway width108 ft (32.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic109,530 (2023)
Projected traffic116,594 by 2043
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Njtpk Sni/Nsi Rdwy over Conrail Jamesburg Br built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1955.

What condition is Njtpk Sni/Nsi Rdwy over Conrail Jamesburg Br 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 2023.

How much traffic does Njtpk Sni/Nsi Rdwy over Conrail Jamesburg Br carry?

About 109,530 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Njtpk Sni/Nsi Rdwy over Conrail Jamesburg Br?

The structure is 125 ft (38.1 m) long with a longest span of 42 ft (12.8 m) and a deck 128 ft wide.

Who owns Njtpk Sni/Nsi Rdwy over Conrail Jamesburg Br?

It is owned by the State Toll Authority.