US Bridges

Knightsbridge Road over East Branch Stony Brook

Fair

Somerset County, New Jersey · 0.08 MI S of Rt 527 · Structure no. 18M1024

Built
1992
33 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
138
2023 count
Owner
County
County Highway Agency

About this bridge

Knightsbridge Road over East Branch Stony Brook is a concrete culvert carrying Knightsbridge Road over East Branch Stony Brook in Somerset County, New Jersey. It was built in 1992, so it is 33 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 138 vehicles a day, roughly 1% of them trucks, projected to reach 168 by 2043. The structure is 22 ft (6.7 m) long and 43 ft wide.

Location

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CarriesKnightsbridge Road
CrossesEast Branch Stony Brook
Location0.08 MI S of Rt 527
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.64059, -74.44618
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating91.1 US tons
Inventory rating54 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width43 ft (13 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic138 (2023)
Projected traffic168 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Knightsbridge Road over East Branch Stony Brook built?

It was built in 1992, making it 33 years old in 2025.

What condition is Knightsbridge Road over East Branch 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 August 2023.

How much traffic does Knightsbridge Road over East Branch Stony Brook carry?

About 138 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Knightsbridge Road over East Branch Stony Brook?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 43 ft wide.

Who owns Knightsbridge Road over East Branch Stony Brook?

It is owned by the County Highway Agency.