US Bridges

Madison Ave over Green Brook

Good

Somerset County, New Jersey · .06 M S of Green Brook RD · Structure no. 18L0902

Built
2002
23 years old
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
5,310
2023 count
Owner
County
County Highway Agency

About this bridge

Madison Ave over Green Brook is a prestressed concrete slab carrying Madison Ave over Green Brook in Somerset County, New Jersey. It was built in 2002, so it is 23 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 5,310 vehicles a day, roughly 1% of them trucks, projected to reach 6,372 by 2043. The structure is 36 ft (11 m) long and 49 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMadison Ave
CrossesGreen Brook
Location.06 M S of Green Brook RD
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.59642, -74.47558
Functional classUrban Local

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 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 evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating91.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span31 ft (9.4 m)
Deck width49 ft (15 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,310 (2023)
Projected traffic6,372 by 2043
Trucks1%
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 Madison Ave over Green Brook built?

It was built in 2002, making it 23 years old in 2025.

What condition is Madison Ave 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 September 2023.

How much traffic does Madison Ave over Green Brook carry?

About 5,310 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Madison Ave over Green Brook?

The structure is 36 ft (11 m) long with a longest span of 31 ft (9.4 m) and a deck 49 ft wide.

Who owns Madison Ave over Green Brook?

It is owned by the County Highway Agency.