GSP NB & SB
GSP NB & SB in 0.4 MI NE Of Gsp&I-78 JCT, Union County, New Jersey received a condition grade of C (59/100). Built in 1953, the bridge carries 150K vehicles daily on GSP NB & SB over Mill Road.
GSP NB & SB carries a C on the BridgeSafety Condition Score with 59/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1953 and is now 73 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. GSP NB & SB carries an average daily traffic count of 149,891 vehicles, with 9 lane(s) crossing Mill Road. The owning agency is State Toll Authority; 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
GSP NB & SB is a 73-year-old bridge located 0.4 MI NE Of Gsp&I-78 JCT in Union County, New Jersey. The bridge carries GSP NB & SB over Mill Road with 9 traffic lanes, handling approximately 150K vehicles per day. Built in 1953 and reconstructed in 2018, the structure spans 22.3 meters.
The bridge received a Condition Grade of C (59/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 6/9 (fair), and substructure 6/9 (fair).
This bridge is owned and maintained by State Toll Authority.
Location Map
Frequently Asked Questions
GSP NB & SB has a Condition Score of 59/100 (Grade C). Its deck is rated 7/9, superstructure 6/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
GSP NB & SB was built in 1953 and reconstructed in 2018, making it 73 years old. The average bridge age in the United States is 48 years.
GSP NB & SB carries approximately 150K vehicles per day (average daily traffic). The bridge has 9 traffic lanes. It is 22.3 meters long and located on GSP NB & SB in 0.4 MI NE Of Gsp&I-78 JCT, Union County, New Jersey.
No, GSP NB & SB is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
GSP NB & SB is located 0.4 MI NE Of Gsp&I-78 JCT in Union County, New Jersey. The bridge carries GSP NB & SB over Mill Road. Its coordinates are 40.711167, -74.244069. It is maintained by State Toll Authority.
GSP NB & SB carries GSP NB & SB over Mill Road. The bridge is 22.3 meters long and was built in 1953, with reconstruction in 2018.
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.