US Bridges

Willow Brook Road over Hop Brook

Fair

Monmouth County, New Jersey · 0.95 Miles East of Nj 34 · Structure no. 1300H31

Built
1962
63 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
42 ft
2 main spans
Daily traffic
1,139
2023 count
Owner
County
County Highway Agency

About this bridge

Willow Brook Road over Hop Brook is a concrete continuous box beam or girders - multiple carrying Willow Brook Road over Hop Brook in Monmouth 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 1,139 vehicles a day, roughly 1% of them trucks, projected to reach 1,693 by 2043. The structure is 42 ft (12.8 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesWillow Brook Road
CrossesHop Brook
Location0.95 Miles East of Nj 34
RouteCity Street 0
CountyMonmouth County
StateNew Jersey
Coordinates40.32981, -74.17217
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.
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32 US tons
Inventory rating19 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span20 ft (6.1 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,139 (2023)
Projected traffic1,693 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Willow Brook Road over Hop Brook built?

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

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

About 1,139 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Willow Brook Road over Hop Brook?

The structure is 42 ft (12.8 m) long with a longest span of 20 ft (6.1 m) and a deck 30 ft wide.

Who owns Willow Brook Road over Hop Brook?

It is owned by the County Highway Agency.