US Bridges

Nj 34 over Lefferts Lake

Fair

Monmouth County, New Jersey · .3 Mile North of 79 JCT · Structure no. 1309152

Built
1990
35 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
185 ft
2 main spans
Daily traffic
20,500
2020 count
Owner
State
State Highway Agency

About this bridge

Nj 34 over Lefferts Lake is a prestressed concrete continuous stringer/multi-beam or girder carrying Nj 34 over Lefferts Lake in Monmouth County, New Jersey. It was built in 1990, so it is 35 years old, younger 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 5 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 20,500 vehicles a day, roughly 4% of them trucks, projected to reach 25,010 by 2042. The structure is 185 ft (56.4 m) long and 64 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNj 34
CrossesLefferts Lake
Location.3 Mile North of 79 JCT
RouteState Highway 34
CountyMonmouth County
StateNew Jersey
Coordinates40.41105, -74.23905
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length185 ft (56.4 m)
Longest span89 ft (27.1 m)
Deck width64 ft (19.5 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,500 (2020)
Projected traffic25,010 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 Nj 34 over Lefferts Lake built?

It was built in 1990, making it 35 years old in 2025.

What condition is Nj 34 over Lefferts Lake 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 2024.

How much traffic does Nj 34 over Lefferts Lake carry?

About 20,500 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nj 34 over Lefferts Lake?

The structure is 185 ft (56.4 m) long with a longest span of 89 ft (27.1 m) and a deck 64 ft wide.

Who owns Nj 34 over Lefferts Lake?

It is owned by the State Highway Agency.