US Bridges

I-80 EB over Den Brook

Fair

Morris County, New Jersey · 0.56 MI E of US 46 · Structure no. 1414152

Built
1961
64 years old, rebuilt 1993
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
68,620
2023 count
Owner
State
State Highway Agency

About this bridge

I-80 EB over Den Brook is a prestressed concrete stringer/multi-beam or girder carrying I-80 EB over Den Brook in Morris County, New Jersey. It was built in 1961 and reconstructed in 1993, so it is 64 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 68,620 vehicles a day, roughly 9% of them trucks, projected to reach 82,344 by 2043. The structure is 55 ft (16.8 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-80 EB
CrossesDen Brook
Location0.56 MI E of US 46
RouteInterstate 80
CountyMorris County
StateNew Jersey
Coordinates40.89088, -74.48144
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length55 ft (16.8 m)
Longest span49 ft (14.9 m)
Deck width73 ft (22.1 m)
Roadway width69 ft (20.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68,620 (2023)
Projected traffic82,344 by 2043
Trucks9%
Lanes on structure4
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-80 EB over Den Brook built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1993.

What condition is I-80 EB over Den Brook 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 March 2023.

How much traffic does I-80 EB over Den Brook carry?

About 68,620 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-80 EB over Den Brook?

The structure is 55 ft (16.8 m) long with a longest span of 49 ft (14.9 m) and a deck 73 ft wide.

Who owns I-80 EB over Den Brook?

It is owned by the State Highway Agency.