US Bridges

I-78 EB over Quarry Rd.

Fair

Union County, New Jersey · 0.9 MI W of 78-24 JCT · Structure no. 2010160

Built
1967
58 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
78 ft
1 main span
Daily traffic
45,520
2023 count
Owner
State
State Highway Agency

About this bridge

I-78 EB over Quarry Rd. is a steel stringer/multi-beam or girder carrying I-78 EB over Quarry Rd. in Union County, New Jersey. It was built in 1967, so it is 58 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 45,520 vehicles a day, roughly 9% of them trucks, projected to reach 54,620 by 2043. The structure is 78 ft (23.8 m) long and 82 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI-78 EB
CrossesQuarry Rd.
Location0.9 MI W of 78-24 JCT
RouteInterstate 78
CountyUnion County
StateNew Jersey
Coordinates40.70824, -74.33574
Functional classUrban Principal Arterial - Interstate

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length78 ft (23.8 m)
Longest span73 ft (22.3 m)
Deck width82 ft (25 m)
Roadway width77 ft (23.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,520 (2023)
Projected traffic54,620 by 2043
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-78 EB over Quarry Rd. built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-78 EB over Quarry Rd. 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 February 2023.

How much traffic does I-78 EB over Quarry Rd. carry?

About 45,520 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-78 EB over Quarry Rd.?

The structure is 78 ft (23.8 m) long with a longest span of 73 ft (22.3 m) and a deck 82 ft wide.

Who owns I-78 EB over Quarry Rd.?

It is owned by the State Highway Agency.