US Bridges

Humboldt Street over I-280

Fair

Essex County, New Jersey · 0.9 Miles East of Gsp · Structure no. 0730186

Built
1970
55 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
186 ft
2 main spans
Daily traffic
6,419
2023 count
Owner
State
State Highway Agency

About this bridge

Humboldt Street over I-280 is a steel stringer/multi-beam or girder carrying Humboldt Street over I-280 in Essex County, New Jersey. It was built in 1970, so it is 55 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 6,419 vehicles a day, roughly 1% of them trucks, projected to reach 7,703 by 2043. The structure is 186 ft (56.7 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHumboldt Street
CrossesI-280
Location0.9 Miles East of Gsp
RouteCity Street 0
CountyEssex County
StateNew Jersey
Coordinates40.75318, -74.19387
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length186 ft (56.7 m)
Longest span90 ft (27.4 m)
Deck width47 ft (14.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,419 (2023)
Projected traffic7,703 by 2043
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.5 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Humboldt Street over I-280 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Humboldt Street over I-280 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 May 2023.

How much traffic does Humboldt Street over I-280 carry?

About 6,419 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Humboldt Street over I-280?

The structure is 186 ft (56.7 m) long with a longest span of 90 ft (27.4 m) and a deck 47 ft wide.

Who owns Humboldt Street over I-280?

It is owned by the State Highway Agency.