US Bridges

I-78 Ramp H over I-287 NB Ramp a

Fair

Somerset County, New Jersey · 3.6 East of CR523 Spur · Structure no. 1814166

Built
1963
62 years old, rebuilt 1987
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
226 ft
3 main spans
Daily traffic
21,803
2023 count
Owner
State
State Highway Agency

About this bridge

I-78 Ramp H over I-287 NB Ramp a is a steel stringer/multi-beam or girder carrying I-78 Ramp H over I-287 NB Ramp a in Somerset County, New Jersey. It was built in 1963 and reconstructed in 1987, so it is 62 years old, older 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 21,803 vehicles a day, roughly 14% of them trucks, projected to reach 26,163 by 2043. The structure is 226 ft (68.9 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-78 Ramp H
CrossesI-287 NB Ramp a
Location3.6 East of CR523 Spur
RouteInterstate 78
CountySomerset County
StateNew Jersey
Coordinates40.64094, -74.64785
Functional classRural Principal Arterial - Interstate

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating66 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length226 ft (68.9 m)
Longest span93 ft (28.3 m)
Deck width30 ft (9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,803 (2023)
Projected traffic26,163 by 2043
Trucks14%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-78 Ramp H over I-287 NB Ramp a built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1987.

What condition is I-78 Ramp H over I-287 NB Ramp a 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 2023.

How much traffic does I-78 Ramp H over I-287 NB Ramp a carry?

About 21,803 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I-78 Ramp H over I-287 NB Ramp a?

The structure is 226 ft (68.9 m) long with a longest span of 93 ft (28.3 m) and a deck 30 ft wide.

Who owns I-78 Ramp H over I-287 NB Ramp a?

It is owned by the State Highway Agency.