US Bridges

Cedar Brook RD over I-287 NB

Fair

Somerset County, New Jersey · 1.1 MI S of I-78 JCT · Structure no. 1814160

Built
1963
62 years old, rebuilt 1996
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
179 ft
3 main spans
Daily traffic
3,330
2023 count
Owner
State
State Highway Agency

About this bridge

Cedar Brook RD over I-287 NB is a prestressed concrete stringer/multi-beam or girder carrying Cedar Brook RD over I-287 NB in Somerset County, New Jersey. It was built in 1963 and reconstructed in 1996, so it is 62 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 3,330 vehicles a day, roughly 1% of them trucks, projected to reach 3,996 by 2043. The structure is 179 ft (54.6 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCedar Brook RD
CrossesI-287 NB
Location1.1 MI S of I-78 JCT
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.62698, -74.64082
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length179 ft (54.6 m)
Longest span78 ft (23.8 m)
Deck width45 ft (13.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,330 (2023)
Projected traffic3,996 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cedar Brook RD over I-287 NB built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1996.

What condition is Cedar Brook RD over I-287 NB 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 February 2023.

How much traffic does Cedar Brook RD over I-287 NB carry?

About 3,330 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Cedar Brook RD over I-287 NB?

The structure is 179 ft (54.6 m) long with a longest span of 78 ft (23.8 m) and a deck 45 ft wide.

Who owns Cedar Brook RD over I-287 NB?

It is owned by the State Highway Agency.