US Bridges

Lower Kingtown Rd. over Capoolong Creek

Good

Hunterdon County, New Jersey · 0.3 MI West of CR 617 · Structure no. 10XXF55

Built
1997
28 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
700
2023 count
Owner
County
County Highway Agency

About this bridge

Lower Kingtown Rd. over Capoolong Creek is a prestressed concrete box beam or girders - multiple carrying Lower Kingtown Rd. over Capoolong Creek in Hunterdon County, New Jersey. It was built in 1997, so it is 28 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 700 vehicles a day, roughly 3% of them trucks, projected to reach 854 by 2043. The structure is 68 ft (20.7 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLower Kingtown Rd.
CrossesCapoolong Creek
Location0.3 MI West of CR 617
CountyHunterdon County
StateNew Jersey
Coordinates40.59736, -74.92709
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating74 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length68 ft (20.7 m)
Longest span62 ft (18.9 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2023)
Projected traffic854 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Lower Kingtown Rd. over Capoolong Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Lower Kingtown Rd. over Capoolong Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does Lower Kingtown Rd. over Capoolong Creek carry?

About 700 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Lower Kingtown Rd. over Capoolong Creek?

The structure is 68 ft (20.7 m) long with a longest span of 62 ft (18.9 m) and a deck 33 ft wide.

Who owns Lower Kingtown Rd. over Capoolong Creek?

It is owned by the County Highway Agency.