US Bridges

S Jefferson Road over Whippany River

Good

Morris County, New Jersey · 0.67MI NE I287&NJ24 JCT · Structure no. 1400393

Built
1960
65 years old, rebuilt 2009
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
68 ft
1 main span
Daily traffic
7,246
2023 count
Owner
County
County Highway Agency

About this bridge

S Jefferson Road over Whippany River is a steel stringer/multi-beam or girder carrying S Jefferson Road over Whippany River in Morris County, New Jersey. It was built in 1960 and reconstructed in 2009, so it is 65 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 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 7,246 vehicles a day, roughly 4% of them trucks, projected to reach 8,841 by 2043. The structure is 68 ft (20.7 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS Jefferson Road
CrossesWhippany River
Location0.67MI NE I287&NJ24 JCT
RouteCity Street 0
Coordinates40.81938, -74.4405
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating96 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length68 ft (20.7 m)
Longest span62 ft (18.9 m)
Deck width57 ft (17.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,246 (2023)
Projected traffic8,841 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S Jefferson Road over Whippany River built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2009.

What condition is S Jefferson Road 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 July 2023.

How much traffic does S Jefferson Road over Whippany River carry?

About 7,246 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S Jefferson Road over Whippany River?

The structure is 68 ft (20.7 m) long with a longest span of 62 ft (18.9 m) and a deck 57 ft wide.

Who owns S Jefferson Road over Whippany River?

It is owned by the County Highway Agency.