US Bridges

I-287 N.B. over US 46

Fair

Morris County, New Jersey · I-287 & 46 Jct. · Structure no. 1420157

Built
1963
62 years old, rebuilt 1976
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
240 ft
4 main spans
Daily traffic
51,327
2020 count
Owner
State
State Highway Agency

About this bridge

I-287 N.B. over US 46 is a steel stringer/multi-beam or girder carrying I-287 N.B. over US 46 in Morris County, New Jersey. It was built in 1963 and reconstructed in 1976, 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 51,327 vehicles a day, roughly 9% of them trucks, projected to reach 62,630 by 2040. The structure is 240 ft (73.2 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-287 N.B.
CrossesUS 46
LocationI-287 & 46 Jct.
RouteInterstate 287
CountyMorris County
StateNew Jersey
Coordinates40.87005, -74.41859
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span91 ft (27.7 m)
Deck width58 ft (17.6 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic51,327 (2020)
Projected traffic62,630 by 2040
Trucks9%
Lanes on structure3
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-287 N.B. over US 46 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1976.

What condition is I-287 N.B. over US 46 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 2024.

How much traffic does I-287 N.B. over US 46 carry?

About 51,327 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is I-287 N.B. over US 46?

The structure is 240 ft (73.2 m) long with a longest span of 91 ft (27.7 m) and a deck 58 ft wide.

Who owns I-287 N.B. over US 46?

It is owned by the State Highway Agency.