US Bridges

West Main ST CR624 over Rockaway River

Fair

Morris County, New Jersey · 0.41 Mile West of CR 511 · Structure no. 1400086

Built
1974
51 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
110 ft
1 main span
Daily traffic
12,013
2023 count
Owner
County
County Highway Agency

About this bridge

West Main ST CR624 over Rockaway River is a steel stringer/multi-beam or girder carrying West Main ST CR624 over Rockaway River in Morris County, New Jersey. It was built in 1974, so it is 51 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 12,013 vehicles a day, roughly 4% of them trucks, projected to reach 14,658 by 2043. The structure is 110 ft (33.5 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWest Main ST CR624
CrossesRockaway River
Location0.41 Mile West of CR 511
RouteCounty Highway 624
CountyMorris County
StateNew Jersey
Coordinates40.90772, -74.41909
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length110 ft (33.5 m)
Longest span106 ft (32.3 m)
Deck width58 ft (17.7 m)
Roadway width46 ft (14.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,013 (2023)
Projected traffic14,658 by 2043
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 West Main ST CR624 over Rockaway River built?

It was built in 1974, making it 51 years old in 2025.

What condition is West Main ST CR624 over Rockaway River 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 July 2023.

How much traffic does West Main ST CR624 over Rockaway River carry?

About 12,013 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is West Main ST CR624 over Rockaway River?

The structure is 110 ft (33.5 m) long with a longest span of 106 ft (32.3 m) and a deck 58 ft wide.

Who owns West Main ST CR624 over Rockaway River?

It is owned by the County Highway Agency.