US Bridges

Hemlock Road over Stony Brook

Fair

Warren County, New Jersey · 1.9 Miles West of Nj 94 · Structure no. 2101358

Built
1989
36 years old
Condition
Fair
inspected March 2023
Type
Slab
Wood or Timber
Length
35 ft
1 main span
Daily traffic
94
2023 count
Owner
County
County Highway Agency

About this bridge

Hemlock Road over Stony Brook is a wood or timber slab carrying Hemlock Road over Stony Brook in Warren County, New Jersey. It was built in 1989, so it is 36 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 94 vehicles a day, roughly 3% of them trucks, projected to reach 115 by 2043. The structure is 35 ft (10.7 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesHemlock Road
CrossesStony Brook
Location1.9 Miles West of Nj 94
RouteCity Street 0
CountyWarren County
StateNew Jersey
Coordinates40.95698, -75.08788
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length35 ft (10.7 m)
Longest span34 ft (10.4 m)
Deck width31 ft (9.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic94 (2023)
Projected traffic115 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hemlock Road over Stony Brook built?

It was built in 1989, making it 36 years old in 2025.

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

About 94 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Hemlock Road over Stony Brook?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 31 ft wide.

Who owns Hemlock Road over Stony Brook?

It is owned by the County Highway Agency.