US Bridges

Cedarbrook Avenue over Cedar Brook

Fair

Middlesex County, New Jersey · 0.5 Mile West of RTE 531 · Structure no. 122B059

Built
1974
51 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
5,373
2023 count
Owner
County
County Highway Agency

About this bridge

Cedarbrook Avenue over Cedar Brook is a prestressed concrete box beam or girders - multiple carrying Cedarbrook Avenue over Cedar Brook in Middlesex County, New Jersey. It was built in 1974, so it is 51 years old, younger 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 5,373 vehicles a day, roughly 1% of them trucks, projected to reach 6,556 by 2043. The structure is 55 ft (16.8 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCedarbrook Avenue
CrossesCedar Brook
Location0.5 Mile West of RTE 531
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.59297, -74.40976
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span52 ft (15.8 m)
Deck width43 ft (13 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,373 (2023)
Projected traffic6,556 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cedarbrook Avenue over Cedar Brook built?

It was built in 1974, making it 51 years old in 2025.

What condition is Cedarbrook Avenue over Cedar 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 Cedarbrook Avenue over Cedar Brook carry?

About 5,373 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Cedarbrook Avenue over Cedar Brook?

The structure is 55 ft (16.8 m) long with a longest span of 52 ft (15.8 m) and a deck 43 ft wide.

Who owns Cedarbrook Avenue over Cedar Brook?

It is owned by the County Highway Agency.