US Bridges

Rynearson Road over Third Neshanic Riv Trib

Fair

Hunterdon County, New Jersey · 250 Ft.S. of Dunkard- RD · Structure no. 1000123

Built
1925
100 years old, rebuilt 1987
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
148
2023 count
Owner
County
County Highway Agency

About this bridge

Rynearson Road over Third Neshanic Riv Trib is a steel stringer/multi-beam or girder carrying Rynearson Road over Third Neshanic Riv Trib in Hunterdon County, New Jersey. It was built in 1925 and reconstructed in 1987, so it is 100 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 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 148 vehicles a day, roughly 3% of them trucks, projected to reach 181 by 2043. The structure is 29 ft (8.8 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesRynearson Road
CrossesThird Neshanic Riv Trib
Location250 Ft.S. of Dunkard- RD
RouteCity Street 0
CountyHunterdon County
StateNew Jersey
Coordinates40.44407, -74.88959
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating83 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic148 (2023)
Projected traffic181 by 2043
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$238,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rynearson Road over Third Neshanic Riv Trib built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1987.

What condition is Rynearson Road over Third Neshanic Riv Trib 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 Rynearson Road over Third Neshanic Riv Trib carry?

About 148 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Rynearson Road over Third Neshanic Riv Trib?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 16 ft wide.

Who owns Rynearson Road over Third Neshanic Riv Trib?

It is owned by the County Highway Agency.