US Bridges

Petticoat Lane over I-78

Fair

Hunterdon County, New Jersey · 1.78 MI East of Nj 31 · Structure no. 1018157

Built
1968
57 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
2 main spans
Daily traffic
3,993
2024 count
Owner
State
State Highway Agency

About this bridge

Petticoat Lane over I-78 is a prestressed concrete stringer/multi-beam or girder carrying Petticoat Lane over I-78 in Hunterdon County, New Jersey. It was built in 1968, so it is 57 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 3,993 vehicles a day, roughly 1% of them trucks, projected to reach 4,792 by 2044. The structure is 180 ft (54.9 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPetticoat Lane
CrossesI-78
Location1.78 MI East of Nj 31
RouteCity Street 0
CountyHunterdon County
StateNew Jersey
Coordinates40.64482, -74.86072
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 rating66 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span87 ft (26.5 m)
Deck width44 ft (13.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,993 (2024)
Projected traffic4,792 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Petticoat Lane over I-78 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Petticoat Lane over I-78 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 December 2023.

How much traffic does Petticoat Lane over I-78 carry?

About 3,993 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Petticoat Lane over I-78?

The structure is 180 ft (54.9 m) long with a longest span of 87 ft (26.5 m) and a deck 44 ft wide.

Who owns Petticoat Lane over I-78?

It is owned by the State Highway Agency.