US Bridges

CR 631 over Wallkill River

Fair

Sussex County, New Jersey · 0.55 MI North of Nj 23 · Structure no. 1900E04

Built
1910
115 years old, rebuilt 2016
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
6,513
2023 count
Owner
County
County Highway Agency

About this bridge

CR 631 over Wallkill River is a prestressed concrete slab carrying CR 631 over Wallkill River in Sussex County, New Jersey. It was built in 1910 and reconstructed in 2016, so it is 115 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 6,513 vehicles a day, roughly 3% of them trucks, projected to reach 7,815 by 2043. The structure is 33 ft (10.1 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCR 631
CrossesWallkill River
Location0.55 MI North of Nj 23
RouteCounty Highway 631
CountySussex County
StateNew Jersey
Coordinates41.11221, -74.58882
Functional classUrban 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length33 ft (10.1 m)
Longest span31 ft (9.4 m)
Deck width41 ft (12.6 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,513 (2023)
Projected traffic7,815 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$298,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 631 over Wallkill River built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 2016.

What condition is CR 631 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 March 2023.

How much traffic does CR 631 over Wallkill River carry?

About 6,513 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CR 631 over Wallkill River?

The structure is 33 ft (10.1 m) long with a longest span of 31 ft (9.4 m) and a deck 41 ft wide.

Who owns CR 631 over Wallkill River?

It is owned by the County Highway Agency.