US Bridges

Grove Street over Stony Brook

Fair

Somerset County, New Jersey · 0.08 MI So US 22 · Structure no. 18M1006

Built
2005
20 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
1,144
2023 count
Owner
County
County Highway Agency

About this bridge

Grove Street over Stony Brook is a steel stringer/multi-beam or girder carrying Grove Street over Stony Brook in Somerset County, New Jersey. It was built in 2005, so it is 20 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 1,144 vehicles a day, roughly 1% of them trucks, projected to reach 1,373 by 2043. The structure is 63 ft (19.2 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGrove Street
CrossesStony Brook
Location0.08 MI So US 22
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.6247, -74.43926
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating83 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length63 ft (19.2 m)
Longest span58 ft (17.7 m)
Deck width52 ft (15.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,144 (2023)
Projected traffic1,373 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 Grove Street over Stony Brook built?

It was built in 2005, making it 20 years old in 2025.

What condition is Grove Street 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 October 2023.

How much traffic does Grove Street over Stony Brook carry?

About 1,144 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Grove Street over Stony Brook?

The structure is 63 ft (19.2 m) long with a longest span of 58 ft (17.7 m) and a deck 52 ft wide.

Who owns Grove Street over Stony Brook?

It is owned by the County Highway Agency.