US Bridges

Wertsville Road over Trib of Neshanic River

Fair

Somerset County, New Jersey · 0.6 MI West Montgomery RD · Structure no. 18B0401

Built
1997
28 years old
Condition
Fair
inspected August 2023
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
1,757
2023 count
Owner
County
County Highway Agency

About this bridge

Wertsville Road over Trib of Neshanic River is a wood or timber slab carrying Wertsville Road over Trib of Neshanic River in Somerset County, New Jersey. It was built in 1997, so it is 28 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 1,757 vehicles a day, roughly 3% of them trucks, projected to reach 2,108 by 2043. The structure is 26 ft (7.9 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesWertsville Road
CrossesTrib of Neshanic River
Location0.6 MI West Montgomery RD
CountySomerset County
StateNew Jersey
Coordinates40.47338, -74.76217
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.
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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating94 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic1,757 (2023)
Projected traffic2,108 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Wertsville Road over Trib of Neshanic River built?

It was built in 1997, making it 28 years old in 2025.

What condition is Wertsville Road over Trib of Neshanic 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 Wertsville Road over Trib of Neshanic River carry?

About 1,757 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Wertsville Road over Trib of Neshanic River?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.

Who owns Wertsville Road over Trib of Neshanic River?

It is owned by the County Highway Agency.