US Bridges

Dey Grove Road over Manalapan Brook

Good

Monmouth County, New Jersey · 0.66 Mi. West of CR527ALT · Structure no. 130MN28

Built
2017
8 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
475
2023 count
Owner
County
County Highway Agency

About this bridge

Dey Grove Road over Manalapan Brook is a prestressed concrete box beam or girders - multiple carrying Dey Grove Road over Manalapan Brook in Monmouth County, New Jersey. It was built in 2017, so it is 8 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 475 vehicles a day, roughly 3% of them trucks, projected to reach 579 by 2043. The structure is 52 ft (15.8 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesDey Grove Road
CrossesManalapan Brook
Location0.66 Mi. West of CR527ALT
RouteCity Street 0
CountyMonmouth County
StateNew Jersey
Coordinates40.2849, -74.38857
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.7 US tons
Inventory rating53.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length52 ft (15.8 m)
Longest span46 ft (14 m)
Deck width35 ft (10.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2023)
Projected traffic579 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Dey Grove Road over Manalapan Brook built?

It was built in 2017, making it 8 years old in 2025.

What condition is Dey Grove Road over Manalapan Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Dey Grove Road over Manalapan Brook carry?

About 475 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Dey Grove Road over Manalapan Brook?

The structure is 52 ft (15.8 m) long with a longest span of 46 ft (14 m) and a deck 35 ft wide.

Who owns Dey Grove Road over Manalapan Brook?

It is owned by the County Highway Agency.