US Bridges

County Route 631 over Hakihokake Creek

Fair

Hunterdon County, New Jersey · 0.36 Mi. South of CR 614 · Structure no. 1000124

Built
1985
40 years old
Condition
Fair
inspected April 2023
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
726
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 631 over Hakihokake Creek is a wood or timber slab carrying County Route 631 over Hakihokake Creek in Hunterdon County, New Jersey. It was built in 1985, so it is 40 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 726 vehicles a day, roughly 3% of them trucks, projected to reach 886 by 2043. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Route 631
CrossesHakihokake Creek
Location0.36 Mi. South of CR 614
RouteCounty Highway 631
CountyHunterdon County
StateNew Jersey
Coordinates40.60233, -75.07299
Functional classRural Major 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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic726 (2023)
Projected traffic886 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Route 631 over Hakihokake Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is County Route 631 over Hakihokake Creek 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 631 over Hakihokake Creek carry?

About 726 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County Route 631 over Hakihokake Creek?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 28 ft wide.

Who owns County Route 631 over Hakihokake Creek?

It is owned by the County Highway Agency.