US Bridges

Nj 18 over Nj Route 66

Fair

Monmouth County, New Jersey · 1.56 M North of JCT 33 · Structure no. 1328154

Built
1968
57 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
170 ft
2 main spans
Daily traffic
57,261
2022 count
Owner
State
State Highway Agency

About this bridge

Nj 18 over Nj Route 66 is a prestressed concrete stringer/multi-beam or girder carrying Nj 18 over Nj Route 66 in Monmouth 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 57,261 vehicles a day, roughly 5% of them trucks, projected to reach 69,870 by 2042. The structure is 170 ft (51.8 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNj 18
CrossesNj Route 66
Location1.56 M North of JCT 33
RouteState Highway 18
CountyMonmouth County
StateNew Jersey
Coordinates40.22823, -74.04967
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating66 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span82 ft (25 m)
Deck width46 ft (14 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,261 (2022)
Projected traffic69,870 by 2042
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$979,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nj 18 over Nj Route 66 built?

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

What condition is Nj 18 over Nj Route 66 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 August 2024.

How much traffic does Nj 18 over Nj Route 66 carry?

About 57,261 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Nj 18 over Nj Route 66?

The structure is 170 ft (51.8 m) long with a longest span of 82 ft (25 m) and a deck 46 ft wide.

Who owns Nj 18 over Nj Route 66?

It is owned by the State Highway Agency.