US Bridges

Warrenville RD over Green Brook

Fair

Somerset County, New Jersey · 0.58 MI S of US 22 · Structure no. 18L0801

Built
1987
38 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
175 ft
3 main spans
Daily traffic
10,121
2023 count
Owner
County
County Highway Agency

About this bridge

Warrenville RD over Green Brook is a prestressed concrete box beam or girders - multiple carrying Warrenville RD over Green Brook in Somerset County, New Jersey. It was built in 1987, so it is 38 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 10,121 vehicles a day, roughly 4% of them trucks, projected to reach 12,350 by 2043. The structure is 175 ft (53.3 m) long and 49 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesWarrenville RD
CrossesGreen Brook
Location0.58 MI S of US 22
RouteCounty Highway 651
CountySomerset County
StateNew Jersey
Coordinates40.58967, -74.4825
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length175 ft (53.3 m)
Longest span51 ft (15.5 m)
Deck width49 ft (14.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,121 (2023)
Projected traffic12,350 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Warrenville RD over Green Brook built?

It was built in 1987, making it 38 years old in 2025.

What condition is Warrenville RD over Green 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 September 2023.

How much traffic does Warrenville RD over Green Brook carry?

About 10,121 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Warrenville RD over Green Brook?

The structure is 175 ft (53.3 m) long with a longest span of 51 ft (15.5 m) and a deck 49 ft wide.

Who owns Warrenville RD over Green Brook?

It is owned by the County Highway Agency.