US Bridges

I-280 WB over Whippany River

Good

Morris County, New Jersey · 1.4 MI SE of 280-80 JCT · Structure no. 1418152

Built
1970
55 years old, rebuilt 2015
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
201 ft
2 main spans
Daily traffic
26,100
2024 count
Owner
State
State Highway Agency

About this bridge

I-280 WB over Whippany River is a steel stringer/multi-beam or girder carrying I-280 WB over Whippany River in Morris County, New Jersey. It was built in 1970 and reconstructed in 2015, so it is 55 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 26,100 vehicles a day, roughly 9% of them trucks, projected to reach 31,400 by 2044. The structure is 201 ft (61.3 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-280 WB
CrossesWhippany River
Location1.4 MI SE of 280-80 JCT
RouteInterstate 280
Coordinates40.84491, -74.34762
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating61.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length201 ft (61.3 m)
Longest span97 ft (29.6 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,100 (2024)
Projected traffic31,400 by 2044
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-280 WB over Whippany River built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2015.

What condition is I-280 WB over Whippany River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does I-280 WB over Whippany River carry?

About 26,100 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is I-280 WB over Whippany River?

The structure is 201 ft (61.3 m) long with a longest span of 97 ft (29.6 m) and a deck 44 ft wide.

Who owns I-280 WB over Whippany River?

It is owned by the State Highway Agency.