US Bridges

Round Valley Road over Njt(raritan Valley Line)

Fair

Hunterdon County, New Jersey · 0.25 MI South of RT22 JCT · Structure no. 3487001

Built
1977
48 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
99 ft
1 main span
Daily traffic
1,941
2023 count
Owner
State
Other State Agency

About this bridge

Round Valley Road over Njt(raritan Valley Line) is a steel stringer/multi-beam or girder carrying Round Valley Road over Njt(raritan Valley Line) in Hunterdon County, New Jersey. It was built in 1977, so it is 48 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 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 1,941 vehicles a day, roughly 4% of them trucks, projected to reach 2,329 by 2043. The structure is 99 ft (30.2 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesRound Valley Road
CrossesNjt(raritan Valley Line)
Location0.25 MI South of RT22 JCT
RouteCounty Highway 621
Coordinates40.63958, -74.8505
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating93 US tons
Inventory rating56 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length99 ft (30.2 m)
Longest span93 ft (28.3 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,941 (2023)
Projected traffic2,329 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Round Valley Road over Njt(raritan Valley Line) built?

It was built in 1977, making it 48 years old in 2025.

What condition is Round Valley Road over Njt(raritan Valley Line) 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 September 2023.

How much traffic does Round Valley Road over Njt(raritan Valley Line) carry?

About 1,941 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Round Valley Road over Njt(raritan Valley Line)?

The structure is 99 ft (30.2 m) long with a longest span of 93 ft (28.3 m) and a deck 47 ft wide.

Who owns Round Valley Road over Njt(raritan Valley Line)?

It is owned by the Other State Agency.