I-78
I-78 in 0.6 MI West Of Gsp JCT, Union County, New Jersey received a condition grade of B (73/100). Built in 1974, the bridge carries 203K vehicles daily on I-78 over Walker Avenue.
I-78 carries a B on the BridgeSafety Condition Score with 73/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 1974 and is now 52 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. I-78 carries an average daily traffic count of 202,840 vehicles, with 13 lane(s) crossing Walker Avenue. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
I-78 is a 52-year-old bridge located 0.6 MI West Of Gsp JCT in Union County, New Jersey. The bridge carries I-78 over Walker Avenue with 13 traffic lanes, handling approximately 203K vehicles per day. Built in 1974 and reconstructed in 2010, the structure spans 32 meters.
The bridge received a Condition Grade of B (73/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 7/9 (good), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-78 has a Condition Score of 73/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-78 was built in 1974 and reconstructed in 2010, making it 52 years old. The average bridge age in the United States is 48 years.
I-78 carries approximately 203K vehicles per day (average daily traffic). The bridge has 13 traffic lanes. It is 32 meters long and located on I-78 in 0.6 MI West Of Gsp JCT, Union County, New Jersey.
No, I-78 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I-78 is located 0.6 MI West Of Gsp JCT in Union County, New Jersey. The bridge carries I-78 over Walker Avenue. Its coordinates are 40.707900, -74.256619. It is maintained by State Highway Agency.
I-78 carries I-78 over Walker Avenue. The bridge is 32 meters long and was built in 1974, with reconstruction in 2010.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.