US Bridges

(NJ-18) Ramp U over NJ-18

Fair

Middlesex County, New Jersey · 2.3 Miles North of US 1 · Structure no. 1237152

Built
1982
43 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
179 ft
2 main spans
Daily traffic
5,684
2024 count
Owner
State
State Highway Agency

About this bridge

(NJ-18) Ramp U over NJ-18 is a steel stringer/multi-beam or girder carrying (NJ-18) Ramp U over NJ-18 in Middlesex County, New Jersey. It was built in 1982, so it is 43 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 5,684 vehicles a day, roughly 5% of them trucks, projected to reach 8,526 by 2044. The structure is 179 ft (54.6 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries(NJ-18) Ramp U
CrossesNJ-18
Location2.3 Miles North of US 1
RouteState Highway 18
CountyMiddlesex County
StateNew Jersey
Coordinates40.50371, -74.44688
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length179 ft (54.6 m)
Longest span105 ft (32 m)
Deck width29 ft (8.8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,684 (2024)
Projected traffic8,526 by 2044
Trucks5%
Lanes on structure1
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$48,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was (NJ-18) Ramp U over NJ-18 built?

It was built in 1982, making it 43 years old in 2025.

What condition is (NJ-18) Ramp U 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 April 2024.

How much traffic does (NJ-18) Ramp U over NJ-18 carry?

About 5,684 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is (NJ-18) Ramp U over NJ-18?

The structure is 179 ft (54.6 m) long with a longest span of 105 ft (32 m) and a deck 29 ft wide.

Who owns (NJ-18) Ramp U over NJ-18?

It is owned by the State Highway Agency.