US Bridges

River Road over Nishisakawick Creek

Fair

Hunterdon County, New Jersey · 0.2 MI South of Nj 12 · Structure no. 10XX159

Built
1900
125 years old, rebuilt 1994
Condition
Fair
inspected April 2023
Type
Truss - Thru
Steel
Length
57 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

River Road over Nishisakawick Creek is a steel truss - thru carrying River Road over Nishisakawick Creek in Hunterdon County, New Jersey. It was built in 1900 and reconstructed in 1994, so it is 125 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 100 vehicles a day, projected to reach 121 by 2043. The structure is 57 ft (17.4 m) long and 16 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRiver Road
CrossesNishisakawick Creek
Location0.2 MI South of Nj 12
CountyHunterdon County
StateNew Jersey
Coordinates40.52375, -75.06308
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.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length57 ft (17.4 m)
Longest span56 ft (17.1 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic121 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was River Road over Nishisakawick Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1994.

What condition is River Road over Nishisakawick 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 April 2023.

How much traffic does River Road over Nishisakawick Creek carry?

About 100 vehicles per day (2023 count).

How long is River Road over Nishisakawick Creek?

The structure is 57 ft (17.4 m) long with a longest span of 56 ft (17.1 m) and a deck 16 ft wide.

Who owns River Road over Nishisakawick Creek?

It is owned by the County Highway Agency.