US Bridges

I-287 SB over US 46

Fair

Morris County, New Jersey · I-287 & 46 Jct. · Structure no. 1420158

Built
1963
62 years old, rebuilt 1994
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
230 ft
4 main spans
Daily traffic
53,930
2024 count
Owner
State
State Highway Agency

About this bridge

I-287 SB over US 46 is a steel stringer/multi-beam or girder carrying I-287 SB over US 46 in Morris County, New Jersey. It was built in 1963 and reconstructed in 1994, 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 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 53,930 vehicles a day, roughly 9% of them trucks, projected to reach 80,224 by 2044. The structure is 230 ft (70.1 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-287 SB
CrossesUS 46
LocationI-287 & 46 Jct.
RouteInterstate 287
Coordinates40.87023, -74.41921
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 rating110.1 US tons
Inventory rating71 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span85 ft (25.9 m)
Deck width56 ft (17.2 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53,930 (2024)
Projected traffic80,224 by 2044
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 SB over US 46 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1994.

What condition is I-287 SB 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 SB over US 46 carry?

About 53,930 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is I-287 SB over US 46?

The structure is 230 ft (70.1 m) long with a longest span of 85 ft (25.9 m) and a deck 56 ft wide.

Who owns I-287 SB over US 46?

It is owned by the State Highway Agency.