US Bridges

County Route 513 over Little Brook

Good

Hunterdon County, New Jersey · 0.18 MI S of CR 512 · Structure no. 1000005

Built
2004
21 years old
Condition
Good
inspected March 2023
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
4,378
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 513 over Little Brook is a concrete frame carrying County Route 513 over Little Brook in Hunterdon County, New Jersey. It was built in 2004, so it is 21 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,378 vehicles a day, roughly 3% of them trucks, projected to reach 5,342 by 2043. The structure is 22 ft (6.7 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCounty Route 513
CrossesLittle Brook
Location0.18 MI S of CR 512
RouteCounty Highway 513
Coordinates40.72343, -74.8482
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating71 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width56 ft (17.1 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,378 (2023)
Projected traffic5,342 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 513 over Little Brook built?

It was built in 2004, making it 21 years old in 2025.

What condition is County Route 513 over Little 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 March 2023.

How much traffic does County Route 513 over Little Brook carry?

About 4,378 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County Route 513 over Little Brook?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 56 ft wide.

Who owns County Route 513 over Little Brook?

It is owned by the County Highway Agency.