US Bridges

Tpk Nsi/Sni/Sno over Ireland Brook

Fair

Middlesex County, New Jersey · 0.4MI. S. of CR 694 · Structure no. M077810

Built
1951
74 years old, rebuilt 1989
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
91,953
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Tpk Nsi/Sni/Sno over Ireland Brook is a concrete culvert carrying Tpk Nsi/Sni/Sno over Ireland Brook in Middlesex County, New Jersey. It was built in 1951 and reconstructed in 1989, so it is 74 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 91,953 vehicles a day, roughly 15% of them trucks, projected to reach 112,200 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesTpk Nsi/Sni/Sno
CrossesIreland Brook
Location0.4MI. S. of CR 694
RouteInterstate 95
CountyMiddlesex County
StateNew Jersey
Coordinates40.40538, -74.45045
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91,953 (2023)
Projected traffic112,200 by 2043
Trucks15%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Tpk Nsi/Sni/Sno over Ireland Brook built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1989.

What condition is Tpk Nsi/Sni/Sno over Ireland Brook 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 Tpk Nsi/Sni/Sno over Ireland Brook carry?

About 91,953 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Tpk Nsi/Sni/Sno over Ireland Brook?

The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m).

Who owns Tpk Nsi/Sni/Sno over Ireland Brook?

It is owned by the State Toll Authority.