US Bridges

Nj 15 NB over Lake Hopatcong

Fair

Morris County, New Jersey · 0.57 MI S of Nj 181 · Structure no. 1424150

Built
1973
52 years old, rebuilt 2017
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
23,525
2023 count
Owner
State
State Highway Agency

About this bridge

Nj 15 NB over Lake Hopatcong is a prestressed concrete box beam or girders - multiple carrying Nj 15 NB over Lake Hopatcong in Morris County, New Jersey. It was built in 1973 and reconstructed in 2017, so it is 52 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 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 23,525 vehicles a day, roughly 5% of them trucks, projected to reach 28,700 by 2043. The structure is 38 ft (11.6 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNj 15 NB
CrossesLake Hopatcong
Location0.57 MI S of Nj 181
RouteState Highway 15
CountyMorris County
StateNew Jersey
Coordinates40.96918, -74.59875
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 protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span36 ft (11 m)
Deck width56 ft (17.2 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,525 (2023)
Projected traffic28,700 by 2043
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$553,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Nj 15 NB over Lake Hopatcong built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2017.

What condition is Nj 15 NB over Lake Hopatcong 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 Nj 15 NB over Lake Hopatcong carry?

About 23,525 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Nj 15 NB over Lake Hopatcong?

The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 56 ft wide.

Who owns Nj 15 NB over Lake Hopatcong?

It is owned by the State Highway Agency.