US Bridges

Green Brook Road over Green Brook

Good

Middlesex County, New Jersey · 0.5 Miles North of Nj 28 · Structure no. 122B232

Built
1974
51 years old, rebuilt 2012
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
4,579
2023 count
Owner
County
County Highway Agency

About this bridge

Green Brook Road over Green Brook is a steel stringer/multi-beam or girder carrying Green Brook Road over Green Brook in Middlesex County, New Jersey. It was built in 1974 and reconstructed in 2012, so it is 51 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,579 vehicles a day, roughly 3% of them trucks, projected to reach 5,588 by 2043. The structure is 95 ft (29 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesGreen Brook Road
CrossesGreen Brook
Location0.5 Miles North of Nj 28
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.5849, -74.50803
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length95 ft (29 m)
Longest span89 ft (27.1 m)
Deck width50 ft (15.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,579 (2023)
Projected traffic5,588 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Green Brook Road over Green Brook built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2012.

What condition is Green Brook Road over Green Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

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

About 4,579 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Green Brook Road over Green Brook?

The structure is 95 ft (29 m) long with a longest span of 89 ft (27.1 m) and a deck 50 ft wide.

Who owns Green Brook Road over Green Brook?

It is owned by the County Highway Agency.