US Bridges

County Route 605 over Delawanna Creek

Fair

Warren County, New Jersey · 1.2 MI N of CR 616 JCT · Structure no. 2101306

Built
2003
22 years old
Condition
Fair
inspected April 2023
Type
Slab
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
264
2023 count
Owner
County
County Highway Agency

About this bridge

County Route 605 over Delawanna Creek is a prestressed concrete slab carrying County Route 605 over Delawanna Creek in Warren County, New Jersey. It was built in 2003, so it is 22 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 264 vehicles a day, roughly 3% of them trucks, projected to reach 322 by 2043. The structure is 35 ft (10.7 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Route 605
CrossesDelawanna Creek
Location1.2 MI N of CR 616 JCT
RouteCounty Highway 605
CountyWarren County
StateNew Jersey
Coordinates40.89877, -75.06754
Functional classRural Local

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 inspectionApril 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 alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length35 ft (10.7 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic264 (2023)
Projected traffic322 by 2043
Trucks3%
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 605 over Delawanna Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is County Route 605 over Delawanna 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 605 over Delawanna Creek carry?

About 264 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is County Route 605 over Delawanna Creek?

The structure is 35 ft (10.7 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns County Route 605 over Delawanna Creek?

It is owned by the County Highway Agency.