US Bridges

Nj 79 over Nj 18

Fair

Monmouth County, New Jersey · 2.89 MI N of CR 537 JCT · Structure no. 1324161

Built
1972
53 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
194 ft
2 main spans
Daily traffic
18,756
2023 count
Owner
State
State Highway Agency

About this bridge

Nj 79 over Nj 18 is a steel stringer/multi-beam or girder carrying Nj 79 over Nj 18 in Monmouth County, New Jersey. It was built in 1972, so it is 53 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 18,756 vehicles a day, roughly 4% of them trucks, projected to reach 22,506 by 2043. The structure is 194 ft (59.1 m) long and 98 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNj 79
CrossesNj 18
Location2.89 MI N of CR 537 JCT
RouteState Highway 79
CountyMonmouth County
StateNew Jersey
Coordinates40.30929, -74.25056
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length194 ft (59.1 m)
Longest span95 ft (29 m)
Deck width98 ft (30 m)
Roadway width79 ft (24.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,756 (2023)
Projected traffic22,506 by 2043
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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$346,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nj 79 over Nj 18 built?

It was built in 1972, making it 53 years old in 2025.

What condition is Nj 79 over Nj 18 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 May 2023.

How much traffic does Nj 79 over Nj 18 carry?

About 18,756 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nj 79 over Nj 18?

The structure is 194 ft (59.1 m) long with a longest span of 95 ft (29 m) and a deck 98 ft wide.

Who owns Nj 79 over Nj 18?

It is owned by the State Highway Agency.