US Bridges

Gsp over US Route 1

Fair

Middlesex County, New Jersey · 1.35 MI South of Nj 27 · Structure no. 361306T

Built
1948
77 years old, rebuilt 2015
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
107 ft
2 main spans
Daily traffic
168,525
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Gsp over US Route 1 is a steel stringer/multi-beam or girder carrying Gsp over US Route 1 in Middlesex County, New Jersey. It was built in 1948 and reconstructed in 2015, 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 168,525 vehicles a day, roughly 1% of them trucks, projected to reach 267,037 by 2043. The structure is 107 ft (32.6 m) long and 159 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesGsp
CrossesUS Route 1
Location1.35 MI South of Nj 27
CountyMiddlesex County
StateNew Jersey
Coordinates40.55271, -74.31718
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.4 US tons
Inventory rating69.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span58 ft (17.7 m)
Deck width159 ft (48.6 m)
Roadway width150 ft (45.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic168,525 (2023)
Projected traffic267,037 by 2043
Trucks1%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 Gsp over US Route 1 built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 2015.

What condition is Gsp over US Route 1 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 March 2023.

How much traffic does Gsp over US Route 1 carry?

About 168,525 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Gsp over US Route 1?

The structure is 107 ft (32.6 m) long with a longest span of 58 ft (17.7 m) and a deck 159 ft wide.

Who owns Gsp over US Route 1?

It is owned by the State Toll Authority.