US Bridges

I-78 over Glenwood Avenue&conrail

Fair

Union County, New Jersey · 0.10 MI East of Gsp JCT · Structure no. 2011162

Built
1976
49 years old, rebuilt 2010
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
175 ft
2 main spans
Daily traffic
193,504
2023 count
Owner
State
State Highway Agency

About this bridge

I-78 over Glenwood Avenue&conrail is a steel stringer/multi-beam or girder carrying I-78 over Glenwood Avenue&conrail in Union County, New Jersey. It was built in 1976 and reconstructed in 2010, so it is 49 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 193,504 vehicles a day, roughly 9% of them trucks, projected to reach 232,205 by 2043. The structure is 175 ft (53.3 m) long and 209 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-78
CrossesGlenwood Avenue&conrail
Location0.10 MI East of Gsp JCT
RouteInterstate 78
CountyUnion County
StateNew Jersey
Coordinates40.70493, -74.24473
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 inspectionMay 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 rating64 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length175 ft (53.3 m)
Longest span92 ft (28 m)
Deck width209 ft (63.8 m)
Roadway width196 ft (59.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic193,504 (2023)
Projected traffic232,205 by 2043
Trucks9%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.9 mi (3 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 over Glenwood Avenue&conrail built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2010.

What condition is I-78 over Glenwood Avenue&conrail 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 I-78 over Glenwood Avenue&conrail carry?

About 193,504 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-78 over Glenwood Avenue&conrail?

The structure is 175 ft (53.3 m) long with a longest span of 92 ft (28 m) and a deck 209 ft wide.

Who owns I-78 over Glenwood Avenue&conrail?

It is owned by the State Highway Agency.