US Bridges

US 46 over Rockaway R Del-Lac&w RR

Fair

Morris County, New Jersey · 2.2 MI East of Rt 15 · Structure no. 1409157

Built
1989
36 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
601 ft
1 main span
Daily traffic
25,591
2023 count
Owner
State
State Highway Agency

About this bridge

US 46 over Rockaway R Del-Lac&w RR is a steel stringer/multi-beam or girder carrying US 46 over Rockaway R Del-Lac&w RR in Morris County, New Jersey. It was built in 1989, so it is 36 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 25,591 vehicles a day, roughly 4% of them trucks, projected to reach 30,709 by 2043. The structure is 601 ft (183.2 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 46
CrossesRockaway R Del-Lac&w RR
Location2.2 MI East of Rt 15
RouteU.S. Route 46
CountyMorris County
StateNew Jersey
Coordinates40.89183, -74.51793
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
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 geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadHS 20 + Mod
Structure length601 ft (183.2 m)
Longest span130 ft (39.6 m)
Deck width60 ft (18.2 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,591 (2023)
Projected traffic30,709 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 46 over Rockaway R Del-Lac&w RR built?

It was built in 1989, making it 36 years old in 2025.

What condition is US 46 over Rockaway R Del-Lac&w RR 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 US 46 over Rockaway R Del-Lac&w RR carry?

About 25,591 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 46 over Rockaway R Del-Lac&w RR?

The structure is 601 ft (183.2 m) long with a longest span of 130 ft (39.6 m) and a deck 60 ft wide.

Who owns US 46 over Rockaway R Del-Lac&w RR?

It is owned by the State Highway Agency.