US Bridges

Cokesbury RD(CO639 over South Br.Of Rockaway Cr.

Fair

Hunterdon County, New Jersey · .23MI S of I78&639 Inters · Structure no. 1005164

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
5,636
2023 count
Owner
State
State Highway Agency

About this bridge

Cokesbury RD(CO639 over South Br.Of Rockaway Cr. is a concrete slab carrying Cokesbury RD(CO639 over South Br.Of Rockaway Cr. in Hunterdon County, New Jersey. It was built in 1967, so it is 58 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 5 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 5,636 vehicles a day, roughly 3% of them trucks, projected to reach 6,877 by 2043. The structure is 25 ft (7.6 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCokesbury RD(CO639
CrossesSouth Br.Of Rockaway Cr.
Location.23MI S of I78&639 Inters
RouteCounty Highway 639
CountyHunterdon County
StateNew Jersey
Coordinates40.64333, -74.835
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width59 ft (18 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,636 (2023)
Projected traffic6,877 by 2043
Trucks3%
Lanes on structure3
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cokesbury RD(CO639 over South Br.Of Rockaway Cr. built?

It was built in 1967, making it 58 years old in 2025.

What condition is Cokesbury RD(CO639 over South Br.Of Rockaway Cr. 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 June 2023.

How much traffic does Cokesbury RD(CO639 over South Br.Of Rockaway Cr. carry?

About 5,636 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Cokesbury RD(CO639 over South Br.Of Rockaway Cr.?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 59 ft wide.

Who owns Cokesbury RD(CO639 over South Br.Of Rockaway Cr.?

It is owned by the State Highway Agency.