US Bridges

Roberts Road over Hop Brook

Poor

Monmouth County, New Jersey · 0.76 Miles North of CR 4. · Structure no. 1300H27

Built
1959
66 years old
Condition
Poor
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
6,288
2023 count
Owner
County
County Highway Agency

About this bridge

Roberts Road over Hop Brook is a concrete continuous box beam or girders - multiple carrying Roberts Road over Hop Brook in Monmouth County, New Jersey. It was built in 1959, so it is 66 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,288 vehicles a day, roughly 3% of them trucks, projected to reach 7,672 by 2043. The structure is 26 ft (7.9 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesRoberts Road
CrossesHop Brook
Location0.76 Miles North of CR 4.
RouteCity Street 0
Coordinates40.37011, -74.17556
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, 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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length26 ft (7.9 m)
Longest span11 ft (3.4 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,288 (2023)
Projected traffic7,672 by 2043
Trucks3%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Roberts Road over Hop Brook built?

It was built in 1959, making it 66 years old in 2025.

What condition is Roberts Road over Hop Brook in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does Roberts Road over Hop Brook carry?

About 6,288 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Roberts Road over Hop Brook?

The structure is 26 ft (7.9 m) long with a longest span of 11 ft (3.4 m) and a deck 31 ft wide.

Who owns Roberts Road over Hop Brook?

It is owned by the County Highway Agency.