US Bridges

Monmouth Blvd over Nj Route 18

Fair

Monmouth County, New Jersey · .3 Miles North of JCT 138 · Structure no. 1327159

Built
1968
57 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
289 ft
4 main spans
Daily traffic
1,273
2023 count
Owner
State
State Highway Agency

About this bridge

Monmouth Blvd over Nj Route 18 is a steel stringer/multi-beam or girder carrying Monmouth Blvd over Nj Route 18 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 1,273 vehicles a day, roughly 1% of them trucks, projected to reach 1,826 by 2043. The structure is 289 ft (88.1 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMonmouth Blvd
CrossesNj Route 18
Location.3 Miles North of JCT 138
RouteCity Street 0
CountyMonmouth County
StateNew Jersey
Coordinates40.17612, -74.07272
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length289 ft (88.1 m)
Longest span101 ft (30.8 m)
Deck width44 ft (13.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,273 (2023)
Projected traffic1,826 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$863,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Monmouth Blvd over Nj Route 18 built?

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

What condition is Monmouth Blvd over Nj Route 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 Monmouth Blvd over Nj Route 18 carry?

About 1,273 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Monmouth Blvd over Nj Route 18?

The structure is 289 ft (88.1 m) long with a longest span of 101 ft (30.8 m) and a deck 44 ft wide.

Who owns Monmouth Blvd over Nj Route 18?

It is owned by the State Highway Agency.