US Bridges

Centennial Ave over Gsp

Fair

Union County, New Jersey · 1 Mile South of Nj 28 JCT · Structure no. 361375T

Built
1948
77 years old
Condition
Fair
inspected July 2023
Type
Frame
Concrete Continuous
Length
208 ft
2 main spans
Daily traffic
18,722
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Centennial Ave over Gsp is a concrete continuous frame carrying Centennial Ave over Gsp in Union County, New Jersey. It was built in 1948, so it is 77 years old, older 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 18,722 vehicles a day, roughly 4% of them trucks, projected to reach 22,844 by 2043. The structure is 208 ft (63.4 m) long and 55 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCentennial Ave
CrossesGsp
Location1 Mile South of Nj 28 JCT
RouteCounty Highway 615
CountyUnion County
StateNew Jersey
Coordinates40.64216, -74.28916
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating48.6 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length208 ft (63.4 m)
Longest span94 ft (28.7 m)
Deck width55 ft (16.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,722 (2023)
Projected traffic22,844 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Centennial Ave over Gsp built?

It was built in 1948, making it 77 years old in 2025.

What condition is Centennial Ave over Gsp 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 July 2023.

How much traffic does Centennial Ave over Gsp carry?

About 18,722 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Centennial Ave over Gsp?

The structure is 208 ft (63.4 m) long with a longest span of 94 ft (28.7 m) and a deck 55 ft wide.

Who owns Centennial Ave over Gsp?

It is owned by the State Toll Authority.