US Bridges

Tpknso/Nsi/Sni/Sno over Mill Brook Branch

Fair

Middlesex County, New Jersey · 0.33 MI South of Int 10 · Structure no. M087760

Built
1950
75 years old, rebuilt 1967
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
171,920
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Tpknso/Nsi/Sni/Sno over Mill Brook Branch is a concrete culvert carrying Tpknso/Nsi/Sni/Sno over Mill Brook Branch in Middlesex County, New Jersey. It was built in 1950 and reconstructed in 1967, 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 171,920 vehicles a day, roughly 17% of them trucks, projected to reach 206,300 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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CarriesTpknso/Nsi/Sni/Sno
CrossesMill Brook Branch
Location0.33 MI South of Int 10
RouteInterstate 95
CountyMiddlesex County
StateNew Jersey
Coordinates40.52305, -74.34711
Functional classRural 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 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 alignment7: Better than present minimum criteria
Operating rating58 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic171,920 (2023)
Projected traffic206,300 by 2043
Trucks17%
Lanes on structure14
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 Tpknso/Nsi/Sni/Sno over Mill Brook Branch built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1967.

What condition is Tpknso/Nsi/Sni/Sno over Mill Brook Branch 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 Tpknso/Nsi/Sni/Sno over Mill Brook Branch carry?

About 171,920 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Tpknso/Nsi/Sni/Sno over Mill Brook Branch?

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

Who owns Tpknso/Nsi/Sni/Sno over Mill Brook Branch?

It is owned by the State Toll Authority.