US Bridges

Willow Brook Road over Willow Brook

Fair

Monmouth County, New Jersey · 0.87 MI East of Nj 34 · Structure no. 13000A2

Built
1950
75 years old, rebuilt 1998
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
48 ft
3 main spans
Daily traffic
2,176
2023 count
Owner
County
County Highway Agency

About this bridge

Willow Brook Road over Willow Brook is a wood or timber stringer/multi-beam or girder carrying Willow Brook Road over Willow Brook in Monmouth County, New Jersey. It was built in 1950 and reconstructed in 1998, 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 5 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 2,176 vehicles a day, roughly 3% of them trucks, projected to reach 2,655 by 2043. The structure is 48 ft (14.6 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesWillow Brook Road
CrossesWillow Brook
Location0.87 MI East of Nj 34
CountyMonmouth County
StateNew Jersey
Coordinates40.32982, -74.17357
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span15 ft (4.6 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,176 (2023)
Projected traffic2,655 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$615,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Willow Brook Road over Willow Brook built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1998.

What condition is Willow Brook Road over Willow 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 Willow Brook Road over Willow Brook carry?

About 2,176 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Willow Brook Road over Willow Brook?

The structure is 48 ft (14.6 m) long with a longest span of 15 ft (4.6 m) and a deck 20 ft wide.

Who owns Willow Brook Road over Willow Brook?

It is owned by the County Highway Agency.