US Bridges

Lake Just-It Road over Mountain Lake Brook

Fair

Warren County, New Jersey · 300 N Mountain Lake RD · Structure no. 2101475

Built
1993
32 years old
Condition
Fair
inspected April 2023
Type
Frame
Concrete
Length
28 ft
1 main span
Daily traffic
269
2023 count
Owner
County
County Highway Agency

About this bridge

Lake Just-It Road over Mountain Lake Brook is a concrete frame carrying Lake Just-It Road over Mountain Lake Brook in Warren County, New Jersey. It was built in 1993, so it is 32 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 6 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 269 vehicles a day, roughly 3% of them trucks, projected to reach 328 by 2043. The structure is 28 ft (8.5 m) long and 56 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesLake Just-It Road
CrossesMountain Lake Brook
Location300 N Mountain Lake RD
RouteCity Street 0
CountyWarren County
StateNew Jersey
Coordinates40.86526, -74.96963
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width56 ft (17.2 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic269 (2023)
Projected traffic328 by 2043
Trucks3%
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 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 Lake Just-It Road over Mountain Lake Brook built?

It was built in 1993, making it 32 years old in 2025.

What condition is Lake Just-It Road over Mountain Lake 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 April 2023.

How much traffic does Lake Just-It Road over Mountain Lake Brook carry?

About 269 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Lake Just-It Road over Mountain Lake Brook?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 56 ft wide.

Who owns Lake Just-It Road over Mountain Lake Brook?

It is owned by the County Highway Agency.