US Bridges

Njtp Sni-Nsi Rwys over Saw Mill Brook

Fair

Middlesex County, New Jersey · 1.4 MI S Interchange 9 · Structure no. M081660

Built
1950
75 years old, rebuilt 1955
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
66,647
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Njtp Sni-Nsi Rwys over Saw Mill Brook is a concrete culvert carrying Njtp Sni-Nsi Rwys over Saw Mill Brook 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 66,647 vehicles a day, roughly 1% of them trucks, projected to reach 81,322 by 2043. The structure is 20 ft (6.1 m) long and 126 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNjtp Sni-Nsi Rwys
CrossesSaw Mill Brook
Location1.4 MI S Interchange 9
RouteInterstate 95
CountyMiddlesex County
StateNew Jersey
Coordinates40.45563, -74.41931
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum 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 loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width126 ft (38.4 m)
Roadway width122 ft (37.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic66,647 (2023)
Projected traffic81,322 by 2043
Trucks1%
Lanes on structure6
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 Njtp Sni-Nsi Rwys over Saw Mill Brook built?

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

What condition is Njtp Sni-Nsi Rwys over Saw Mill 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 March 2023.

How much traffic does Njtp Sni-Nsi Rwys over Saw Mill Brook carry?

About 66,647 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Njtp Sni-Nsi Rwys over Saw Mill Brook?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 126 ft wide.

Who owns Njtp Sni-Nsi Rwys over Saw Mill Brook?

It is owned by the State Toll Authority.