US Bridges

Nj 165 over Swan Creek

Fair

Hunterdon County, New Jersey · 0.15 MI N. of Rt. 29 · Structure no. 1019150

Built
1929
96 years old
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete
Length
32 ft
1 main span
Daily traffic
10,680
2022 count
Owner
State
State Highway Agency

About this bridge

Nj 165 over Swan Creek is a concrete arch - deck carrying Nj 165 over Swan Creek in Hunterdon County, New Jersey. It was built in 1929, so it is 96 years old, older 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 10,680 vehicles a day, roughly 4% of them trucks, projected to reach 12,816 by 2042. The structure is 32 ft (9.8 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNj 165
CrossesSwan Creek
Location0.15 MI N. of Rt. 29
RouteState Highway 165
CountyHunterdon County
StateNew Jersey
Coordinates40.36467, -74.94164
Functional classUrban Minor 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width65 ft (19.8 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,680 (2022)
Projected traffic12,816 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nj 165 over Swan Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is Nj 165 over Swan Creek 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 July 2024.

How much traffic does Nj 165 over Swan Creek carry?

About 10,680 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Nj 165 over Swan Creek?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 65 ft wide.

Who owns Nj 165 over Swan Creek?

It is owned by the State Highway Agency.