US Bridges

Njtpk Nso-Nsi Rwy over Amboy Avenue(edison Twp)

Fair

Middlesex County, New Jersey · 1.3 MI S of Gsp · Structure no. M08889S

Built
1950
75 years old, rebuilt 1955
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
144 ft
3 main spans
Daily traffic
95,190
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Njtpk Nso-Nsi Rwy over Amboy Avenue(edison Twp) is a steel stringer/multi-beam or girder carrying Njtpk Nso-Nsi Rwy over Amboy Avenue(edison Twp) 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 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 95,190 vehicles a day, roughly 13% of them trucks, projected to reach 133,107 by 2043. The structure is 144 ft (43.9 m) long and 127 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNjtpk Nso-Nsi Rwy
CrossesAmboy Avenue(edison Twp)
Location1.3 MI S of Gsp
RouteInterstate 95
CountyMiddlesex County
StateNew Jersey
Coordinates40.53262, -74.33103
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length144 ft (43.9 m)
Longest span60 ft (18.3 m)
Deck width127 ft (38.8 m)
Roadway width123 ft (37.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic95,190 (2023)
Projected traffic133,107 by 2043
Trucks13%
Lanes on structure6
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 Nso-Nsi Rwy over Amboy Avenue(edison Twp) built?

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

What condition is Njtpk Nso-Nsi Rwy over Amboy Avenue(edison Twp) 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 March 2023.

How much traffic does Njtpk Nso-Nsi Rwy over Amboy Avenue(edison Twp) carry?

About 95,190 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Njtpk Nso-Nsi Rwy over Amboy Avenue(edison Twp)?

The structure is 144 ft (43.9 m) long with a longest span of 60 ft (18.3 m) and a deck 127 ft wide.

Who owns Njtpk Nso-Nsi Rwy over Amboy Avenue(edison Twp)?

It is owned by the State Toll Authority.