US Bridges

Stony Brook Road over Stony Brook Tributary

Fair

Hunterdon County, New Jersey · 200 Ft. S.Of Van Dyke Rd. · Structure no. 1000120

Built
1933
92 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
486
2023 count
Owner
County
County Highway Agency

About this bridge

Stony Brook Road over Stony Brook Tributary is a steel stringer/multi-beam or girder carrying Stony Brook Road over Stony Brook Tributary in Hunterdon County, New Jersey. It was built in 1933, so it is 92 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 5 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 486 vehicles a day, roughly 3% of them trucks, projected to reach 592 by 2043. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesStony Brook Road
CrossesStony Brook Tributary
Location200 Ft. S.Of Van Dyke Rd.
RouteCity Street 0
CountyHunterdon County
StateNew Jersey
Coordinates40.40061, -74.80504
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic486 (2023)
Projected traffic592 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$126,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stony Brook Road over Stony Brook Tributary built?

It was built in 1933, making it 92 years old in 2025.

What condition is Stony Brook Road over Stony Brook Tributary 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 Stony Brook Road over Stony Brook Tributary carry?

About 486 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Stony Brook Road over Stony Brook Tributary?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns Stony Brook Road over Stony Brook Tributary?

It is owned by the County Highway Agency.