US Bridges

Garden ST Parkway over Middlesex Reservoir

Fair

Union County, New Jersey · 3.6 Mile North of Nj 27 · Structure no. 361356T

Built
1948
77 years old, rebuilt 1980
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
194,956
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Garden ST Parkway over Middlesex Reservoir is a steel stringer/multi-beam or girder carrying Garden ST Parkway over Middlesex Reservoir in Union County, New Jersey. It was built in 1948 and reconstructed in 1980, 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 194,956 vehicles a day, roughly 1% of them trucks, projected to reach 301,918 by 2043. The structure is 75 ft (22.9 m) long and 149 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesGarden ST Parkway
CrossesMiddlesex Reservoir
Location3.6 Mile North of Nj 27
CountyUnion County
StateNew Jersey
Coordinates40.61937, -74.31025
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span71 ft (21.6 m)
Deck width149 ft (45.5 m)
Roadway width137 ft (41.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic194,956 (2023)
Projected traffic301,918 by 2043
Trucks1%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Garden ST Parkway over Middlesex Reservoir built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1980.

What condition is Garden ST Parkway over Middlesex Reservoir 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 June 2023.

How much traffic does Garden ST Parkway over Middlesex Reservoir carry?

About 194,956 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Garden ST Parkway over Middlesex Reservoir?

The structure is 75 ft (22.9 m) long with a longest span of 71 ft (21.6 m) and a deck 149 ft wide.

Who owns Garden ST Parkway over Middlesex Reservoir?

It is owned by the State Toll Authority.