US Bridges

Nj 23 over I-287

Fair

Morris County, New Jersey · At 23 & I-287 Interchange · Structure no. 1420184

Built
1990
35 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
242 ft
2 main spans
Daily traffic
69,683
2023 count
Owner
State
State Highway Agency

About this bridge

Nj 23 over I-287 is a steel continuous stringer/multi-beam or girder carrying Nj 23 over I-287 in Morris County, New Jersey. It was built in 1990, so it is 35 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 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 69,683 vehicles a day, roughly 4% of them trucks, projected to reach 83,620 by 2043. The structure is 242 ft (73.8 m) long and 117 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNj 23
CrossesI-287
LocationAt 23 & I-287 Interchange
RouteState Highway 23
CountyMorris County
StateNew Jersey
Coordinates40.98868, -74.30948
Functional classUrban Other Principal Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating61.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length242 ft (73.8 m)
Longest span120 ft (36.6 m)
Deck width117 ft (35.7 m)
Roadway width106 ft (32.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,683 (2023)
Projected traffic83,620 by 2043
Trucks4%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nj 23 over I-287 built?

It was built in 1990, making it 35 years old in 2025.

What condition is Nj 23 over I-287 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 August 2023.

How much traffic does Nj 23 over I-287 carry?

About 69,683 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nj 23 over I-287?

The structure is 242 ft (73.8 m) long with a longest span of 120 ft (36.6 m) and a deck 117 ft wide.

Who owns Nj 23 over I-287?

It is owned by the State Highway Agency.