US Bridges

Grove ST (rt 509) over I-280

Fair

Essex County, New Jersey · 0.3 Miles East of Gsp · Structure no. 0730180

Built
1971
54 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
295 ft
3 main spans
Daily traffic
9,473
2023 count
Owner
State
State Highway Agency

About this bridge

Grove ST (rt 509) over I-280 is a steel stringer/multi-beam or girder carrying Grove ST (rt 509) over I-280 in Essex County, New Jersey. It was built in 1971, so it is 54 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 5 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 9,473 vehicles a day, roughly 4% of them trucks, projected to reach 11,368 by 2043. The structure is 295 ft (89.9 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGrove ST (rt 509)
CrossesI-280
Location0.3 Miles East of Gsp
RouteCounty Highway 509
CountyEssex County
StateNew Jersey
Coordinates40.75722, -74.20383
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length295 ft (89.9 m)
Longest span115 ft (35.1 m)
Deck width64 ft (19.5 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,473 (2023)
Projected traffic11,368 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-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$3,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Grove ST (rt 509) over I-280 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Grove ST (rt 509) 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 July 2023.

How much traffic does Grove ST (rt 509) over I-280 carry?

About 9,473 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Grove ST (rt 509) over I-280?

The structure is 295 ft (89.9 m) long with a longest span of 115 ft (35.1 m) and a deck 64 ft wide.

Who owns Grove ST (rt 509) over I-280?

It is owned by the State Highway Agency.