US Bridges

Longwood Lake Road over Rockaway River

Fair

Morris County, New Jersey · 0.25 Mi. SE of CR 699 · Structure no. 1400839

Built
1986
39 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
1,931
2023 count
Owner
County
County Highway Agency

About this bridge

Longwood Lake Road over Rockaway River is a prestressed concrete slab carrying Longwood Lake Road over Rockaway River in Morris County, New Jersey. It was built in 1986, so it is 39 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 1,931 vehicles a day, roughly 1% of them trucks, projected to reach 2,356 by 2043. The structure is 32 ft (9.8 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLongwood Lake Road
CrossesRockaway River
Location0.25 Mi. SE of CR 699
RouteCity Street 0
CountyMorris County
StateNew Jersey
Coordinates40.99059, -74.52737
Functional classUrban Local

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 inspectionAugust 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,931 (2023)
Projected traffic2,356 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Longwood Lake Road over Rockaway River built?

It was built in 1986, making it 39 years old in 2025.

What condition is Longwood Lake Road over Rockaway River 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 Longwood Lake Road over Rockaway River carry?

About 1,931 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Longwood Lake Road over Rockaway River?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns Longwood Lake Road over Rockaway River?

It is owned by the County Highway Agency.