US Bridges

County Route 617 over Capoolong Creek

Fair

Hunterdon County, New Jersey · 1.82 MI South of CR 513 · Structure no. 1000027

Built
1900
125 years old, rebuilt 1989
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
2 main spans
Daily traffic
4,797
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 617 over Capoolong Creek is a steel stringer/multi-beam or girder carrying County Route 617 over Capoolong Creek in Hunterdon County, New Jersey. It was built in 1900 and reconstructed in 1989, so it is 125 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 4,797 vehicles a day, roughly 4% of them trucks, projected to reach 5,853 by 2043. The structure is 76 ft (23.2 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Route 617
CrossesCapoolong Creek
Location1.82 MI South of CR 513
RouteCounty Highway 617
CountyHunterdon County
StateNew Jersey
Coordinates40.59978, -74.92279
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length76 ft (23.2 m)
Longest span35 ft (10.7 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,797 (2023)
Projected traffic5,853 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 County Route 617 over Capoolong Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1989.

What condition is County Route 617 over Capoolong 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 March 2023.

How much traffic does County Route 617 over Capoolong Creek carry?

About 4,797 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is County Route 617 over Capoolong Creek?

The structure is 76 ft (23.2 m) long with a longest span of 35 ft (10.7 m) and a deck 31 ft wide.

Who owns County Route 617 over Capoolong Creek?

It is owned by the County Highway Agency.