US Bridges

Nj TURNPIKE(I-95) over Mill Brook

Fair

Middlesex County, New Jersey · 3.35 MI N of Exit 9 · Structure no. M086650

Built
1950
75 years old, rebuilt 1974
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
175,376
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nj TURNPIKE(I-95) over Mill Brook is a concrete culvert carrying Nj TURNPIKE(I-95) over Mill Brook in Middlesex County, New Jersey. It was built in 1950 and reconstructed in 1974, 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 175,376 vehicles a day, roughly 17% of them trucks, projected to reach 213,392 by 2043. The structure is 25 ft (7.6 m) long and 725 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesNj TURNPIKE(I-95)
CrossesMill Brook
Location3.35 MI N of Exit 9
RouteInterstate 95
CountyMiddlesex County
StateNew Jersey
Coordinates40.51564, -74.36516
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width725 ft (221 m)
Roadway width218 ft (66.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175,376 (2023)
Projected traffic213,392 by 2043
Trucks17%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Nj TURNPIKE(I-95) over Mill Brook built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1974.

What condition is Nj TURNPIKE(I-95) over 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 May 2023.

How much traffic does Nj TURNPIKE(I-95) over Mill Brook carry?

About 175,376 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Nj TURNPIKE(I-95) over Mill Brook?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 725 ft wide.

Who owns Nj TURNPIKE(I-95) over Mill Brook?

It is owned by the State Toll Authority.