US Bridges

Stony Brook Road over Stony Brook

Fair

Morris County, New Jersey · 0.1 Mile South of US RT46 · Structure no. 1401094

Built
2003
22 years old
Condition
Fair
inspected July 2023
Type
Arch - Deck
Concrete
Length
23 ft
1 main span
Daily traffic
621
2023 count
Owner
County
County Highway Agency

About this bridge

Stony Brook Road over Stony Brook is a concrete arch - deck carrying Stony Brook Road over Stony Brook in Morris County, New Jersey. It was built in 2003, so it is 22 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 621 vehicles a day, roughly 1% of them trucks, projected to reach 758 by 2043. The structure is 23 ft (7 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesStony Brook Road
CrossesStony Brook
Location0.1 Mile South of US RT46
CountyMorris County
StateNew Jersey
Coordinates40.80714, -74.74578
Functional classUrban 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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating86 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width65 ft (19.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic621 (2023)
Projected traffic758 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Stony Brook Road over Stony Brook built?

It was built in 2003, making it 22 years old in 2025.

What condition is Stony Brook 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 July 2023.

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

About 621 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Stony Brook Road over Stony Brook?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 65 ft wide.

Who owns Stony Brook Road over Stony Brook?

It is owned by the County Highway Agency.