US Bridges

Nj 23 over Wallkill River

Fair

Sussex County, New Jersey · 1.2 MI North of Nj 94 · Structure no. 1904152

Built
1949
76 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
78 ft
1 main span
Daily traffic
19,472
2023 count
Owner
State
State Highway Agency

About this bridge

Nj 23 over Wallkill River is a steel stringer/multi-beam or girder carrying Nj 23 over Wallkill River in Sussex County, New Jersey. It was built in 1949, so it is 76 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 19,472 vehicles a day, roughly 4% of them trucks, projected to reach 29,208 by 2043. The structure is 78 ft (23.8 m) long and 59 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNj 23
CrossesWallkill River
Location1.2 MI North of Nj 94
RouteState Highway 23
Coordinates41.16681, -74.58664
Functional classUrban Other Principal 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.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span73 ft (22.3 m)
Deck width59 ft (17.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,472 (2023)
Projected traffic29,208 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$215,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nj 23 over Wallkill River built?

It was built in 1949, making it 76 years old in 2025.

What condition is Nj 23 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 May 2023.

How much traffic does Nj 23 over Wallkill River carry?

About 19,472 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Nj 23 over Wallkill River?

The structure is 78 ft (23.8 m) long with a longest span of 73 ft (22.3 m) and a deck 59 ft wide.

Who owns Nj 23 over Wallkill River?

It is owned by the State Highway Agency.