US Bridges

Lenape Trail over Dock Watch Hollow Brook

FairPosted for load

Somerset County, New Jersey · .15 MI N of Smoked Rize D · Structure no. 18H0916

Built
1969
56 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
267
2023 count
Owner
County
County Highway Agency

About this bridge

Lenape Trail over Dock Watch Hollow Brook is a concrete culvert carrying Lenape Trail over Dock Watch Hollow Brook in Somerset County, New Jersey. It was built in 1969, so it is 56 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. Its operating status is: posted for load restriction.

It carries about 267 vehicles a day, roughly 1% of them trucks, projected to reach 320 by 2043. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLenape Trail
CrossesDock Watch Hollow Brook
Location.15 MI N of Smoked Rize D
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.61139, -74.55158
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20 US tons
Inventory rating12 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic267 (2023)
Projected traffic320 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.6 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lenape Trail over Dock Watch Hollow Brook built?

It was built in 1969, making it 56 years old in 2025.

What condition is Lenape Trail over Dock Watch Hollow 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 August 2023.

How much traffic does Lenape Trail over Dock Watch Hollow Brook carry?

About 267 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Lenape Trail over Dock Watch Hollow Brook?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns Lenape Trail over Dock Watch Hollow Brook?

It is owned by the County Highway Agency.