US Bridges

Rt I-78 over Glenside Rd(cr 647)

Fair

Union County, New Jersey · 8.14 MI West of Gsp JCT · Structure no. 2010156

Built
1985
40 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
1 main span
Daily traffic
102,098
2023 count
Owner
State
State Highway Agency

About this bridge

Rt I-78 over Glenside Rd(cr 647) is a steel stringer/multi-beam or girder carrying Rt I-78 over Glenside Rd(cr 647) in Union County, New Jersey. It was built in 1985, so it is 40 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 102,098 vehicles a day, roughly 9% of them trucks, projected to reach 142,937 by 2043. The structure is 68 ft (20.7 m) long and 126 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRt I-78
CrossesGlenside Rd(cr 647)
Location8.14 MI West of Gsp JCT
RouteInterstate 78
CountyUnion County
StateNew Jersey
Coordinates40.68461, -74.3875
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 rating88 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length68 ft (20.7 m)
Longest span64 ft (19.5 m)
Deck width126 ft (38.3 m)
Roadway width119 ft (36.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102,098 (2023)
Projected traffic142,937 by 2043
Trucks9%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt I-78 over Glenside Rd(cr 647) built?

It was built in 1985, making it 40 years old in 2025.

What condition is Rt I-78 over Glenside Rd(cr 647) 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 Rt I-78 over Glenside Rd(cr 647) carry?

About 102,098 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Rt I-78 over Glenside Rd(cr 647)?

The structure is 68 ft (20.7 m) long with a longest span of 64 ft (19.5 m) and a deck 126 ft wide.

Who owns Rt I-78 over Glenside Rd(cr 647)?

It is owned by the State Highway Agency.