US Bridges

I-287SB & Ramp B over Chambers Brook

Fair

Somerset County, New Jersey · .34MI South of I-78 JCT · Structure no. 1814163

Built
1962
63 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
75,187
2023 count
Owner
State
State Highway Agency

About this bridge

I-287SB & Ramp B over Chambers Brook is a concrete culvert carrying I-287SB & Ramp B over Chambers Brook in Somerset County, New Jersey. It was built in 1962, so it is 63 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 75,187 vehicles a day, roughly 9% of them trucks, projected to reach 91,743 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-287SB & Ramp B
CrossesChambers Brook
Location.34MI South of I-78 JCT
RouteInterstate 287
CountySomerset County
StateNew Jersey
Coordinates40.63706, -74.64487
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 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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating73 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75,187 (2023)
Projected traffic91,743 by 2043
Trucks9%
Lanes on structure7
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-287SB & Ramp B over Chambers Brook built?

It was built in 1962, making it 63 years old in 2025.

What condition is I-287SB & Ramp B over Chambers 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 I-287SB & Ramp B over Chambers Brook carry?

About 75,187 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-287SB & Ramp B over Chambers Brook?

The structure is 33 ft (10.1 m) long with a longest span of 13 ft (4 m).

Who owns I-287SB & Ramp B over Chambers Brook?

It is owned by the State Highway Agency.