US Bridges

County Route 519 over Nishisakawick Creek

Fair

Hunterdon County, New Jersey · 0.1 Mile South of CR 513 · Structure no. 1000012

Built
1900
125 years old, rebuilt 1989
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
2,059
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 519 over Nishisakawick Creek is a prestressed concrete slab carrying County Route 519 over Nishisakawick Creek in Hunterdon County, New Jersey. It was built in 1900 and reconstructed in 1989, so it is 125 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 2,059 vehicles a day, roughly 3% of them trucks, projected to reach 2,512 by 2043. The structure is 31 ft (9.4 m) long and 36 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesCounty Route 519
CrossesNishisakawick Creek
Location0.1 Mile South of CR 513
RouteCounty Highway 519
CountyHunterdon County
StateNew Jersey
Coordinates40.56521, -75.02779
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating79 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span26 ft (7.9 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,059 (2023)
Projected traffic2,512 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 519 over Nishisakawick Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1989.

What condition is County Route 519 over Nishisakawick 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 March 2023.

How much traffic does County Route 519 over Nishisakawick Creek carry?

About 2,059 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County Route 519 over Nishisakawick Creek?

The structure is 31 ft (9.4 m) long with a longest span of 26 ft (7.9 m) and a deck 36 ft wide.

Who owns County Route 519 over Nishisakawick Creek?

It is owned by the County Highway Agency.