US Bridges

Rt 138 WB over Nj Rt 18 Fwy

Fair

Monmouth County, New Jersey · 1.82 MI East of Rt 34 · Structure no. 1317157

Built
1968
57 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
191 ft
2 main spans
Daily traffic
26,456
2023 count
Owner
State
State Highway Agency

About this bridge

Rt 138 WB over Nj Rt 18 Fwy is a steel stringer/multi-beam or girder carrying Rt 138 WB over Nj Rt 18 Fwy 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 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 26,456 vehicles a day, roughly 5% of them trucks, projected to reach 32,282 by 2043. The structure is 191 ft (58.2 m) long and 50 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesRt 138 WB
CrossesNj Rt 18 Fwy
Location1.82 MI East of Rt 34
RouteState Highway 138
Coordinates40.17138, -74.0718
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.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94 US tons
Inventory rating56 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length191 ft (58.2 m)
Longest span92 ft (28 m)
Deck width50 ft (15.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,456 (2023)
Projected traffic32,282 by 2043
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$798,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt 138 WB over Nj Rt 18 Fwy built?

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

What condition is Rt 138 WB over Nj Rt 18 Fwy 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 Rt 138 WB over Nj Rt 18 Fwy carry?

About 26,456 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Rt 138 WB over Nj Rt 18 Fwy?

The structure is 191 ft (58.2 m) long with a longest span of 92 ft (28 m) and a deck 50 ft wide.

Who owns Rt 138 WB over Nj Rt 18 Fwy?

It is owned by the State Highway Agency.