US Bridges

CR 631 over Wallkill River

Fair

Sussex County, New Jersey · 0.69 MI North of Nj 23 · Structure no. 1900E06

Built
1875
150 years old, rebuilt 2013
Condition
Fair
inspected March 2023
Type
Arch - Deck
Masonry
Length
40 ft
1 main span
Daily traffic
6,520
2023 count
Owner
County
County Highway Agency

About this bridge

CR 631 over Wallkill River is a masonry arch - deck carrying CR 631 over Wallkill River in Sussex County, New Jersey. It was built in 1875 and reconstructed in 2013, so it is 150 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 6,520 vehicles a day, roughly 3% of them trucks, projected to reach 7,824 by 2043. The structure is 40 ft (12.2 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCR 631
CrossesWallkill River
Location0.69 MI North of Nj 23
RouteCounty Highway 631
CountySussex County
StateNew Jersey
Coordinates41.11439, -74.5909
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span36 ft (11 m)
Deck width45 ft (13.7 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,520 (2023)
Projected traffic7,824 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 statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$370,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 631 over Wallkill River built?

It was built in 1875, making it 150 years old in 2025. It was reconstructed in 2013.

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 6,520 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CR 631 over Wallkill River?

The structure is 40 ft (12.2 m) long with a longest span of 36 ft (11 m) and a deck 45 ft wide.

Who owns CR 631 over Wallkill River?

It is owned by the County Highway Agency.