US Bridges

County Route 523 over Branch of Rockaway Creek

Fair

Hunterdon County, New Jersey · 0.91MILE S. of I-78 · Structure no. 100R014

Built
1992
33 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
13,869
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 523 over Branch of Rockaway Creek is a concrete culvert carrying County Route 523 over Branch of Rockaway Creek in Hunterdon County, New Jersey. It was built in 1992, so it is 33 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 13,869 vehicles a day, roughly 4% of them trucks, projected to reach 16,923 by 2043. The structure is 29 ft (8.8 m) long and 140 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty Route 523
CrossesBranch of Rockaway Creek
Location0.91MILE S. of I-78
RouteCounty Highway 523
CountyHunterdon County
StateNew Jersey
Coordinates40.63925, -74.76253
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width140 ft (42.7 m)
Roadway width116 ft (35.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,869 (2023)
Projected traffic16,923 by 2043
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Route 523 over Branch of Rockaway Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is County Route 523 over Branch of Rockaway Creek 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 April 2023.

How much traffic does County Route 523 over Branch of Rockaway Creek carry?

About 13,869 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is County Route 523 over Branch of Rockaway Creek?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 140 ft wide.

Who owns County Route 523 over Branch of Rockaway Creek?

It is owned by the County Highway Agency.