US Bridges

County Route 642 over Wallkill River

Fair

Sussex County, New Jersey · 1.02 MI E of Nj 284 · Structure no. 1900V39

Built
1968
57 years old, rebuilt 2014
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
159 ft
2 main spans
Daily traffic
1,440
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 642 over Wallkill River is a prestressed concrete box beam or girders - multiple carrying County Route 642 over Wallkill River in Sussex County, New Jersey. It was built in 1968 and reconstructed in 2014, so it is 57 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 1,440 vehicles a day, roughly 5% of them trucks, projected to reach 1,757 by 2043. The structure is 159 ft (48.5 m) long and 38 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesCounty Route 642
CrossesWallkill River
Location1.02 MI E of Nj 284
RouteCounty Highway 642
CountySussex County
StateNew Jersey
Coordinates41.26005, -74.54895
Functional classRural Minor Collector

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
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating79 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span77 ft (23.5 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,440 (2023)
Projected traffic1,757 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 County Route 642 over Wallkill River built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2014.

What condition is County Route 642 over Wallkill 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 April 2023.

How much traffic does County Route 642 over Wallkill River carry?

About 1,440 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is County Route 642 over Wallkill River?

The structure is 159 ft (48.5 m) long with a longest span of 77 ft (23.5 m) and a deck 38 ft wide.

Who owns County Route 642 over Wallkill River?

It is owned by the County Highway Agency.