US Bridges

Holland Brook Road over Holland Brook

Good

Hunterdon County, New Jersey · 0.15 Mi. N. of Cole Road · Structure no. 1000137

Built
1926
99 years old, rebuilt 2010
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
267
2023 count
Owner
County
County Highway Agency

About this bridge

Holland Brook Road over Holland Brook is a prestressed concrete slab carrying Holland Brook Road over Holland Brook in Hunterdon County, New Jersey. It was built in 1926 and reconstructed in 2010, so it is 99 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 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 267 vehicles a day, roughly 3% of them trucks, projected to reach 325 by 2043. The structure is 39 ft (11.9 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesHolland Brook Road
CrossesHolland Brook
Location0.15 Mi. N. of Cole Road
RouteCity Street 0
Coordinates40.57913, -74.77589
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating69 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length39 ft (11.9 m)
Longest span34 ft (10.4 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic267 (2023)
Projected traffic325 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Holland Brook Road over Holland Brook built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 2010.

What condition is Holland Brook Road over Holland 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 April 2023.

How much traffic does Holland Brook Road over Holland Brook carry?

About 267 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Holland Brook Road over Holland Brook?

The structure is 39 ft (11.9 m) long with a longest span of 34 ft (10.4 m) and a deck 32 ft wide.

Who owns Holland Brook Road over Holland Brook?

It is owned by the County Highway Agency.