US Bridges

CR 643(N Morris) over Rockaway River

Fair

Morris County, New Jersey · 500 Ft N of Cty Rt 513 · Structure no. 1401020

Built
1936
89 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
48 ft
1 main span
Daily traffic
6,133
2023 count
Owner
County
County Highway Agency

About this bridge

CR 643(N Morris) over Rockaway River is a steel stringer/multi-beam or girder carrying CR 643(N Morris) over Rockaway River in Morris County, New Jersey. It was built in 1936, so it is 89 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 6,133 vehicles a day, roughly 4% of them trucks, projected to reach 7,483 by 2043. The structure is 48 ft (14.6 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCR 643(N Morris)
CrossesRockaway River
Location500 Ft N of Cty Rt 513
RouteCounty Highway 643
CountyMorris County
StateNew Jersey
Coordinates40.88501, -74.55751
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span43 ft (13.1 m)
Deck width64 ft (19.4 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,133 (2023)
Projected traffic7,483 by 2043
Trucks4%
Lanes on structure2
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$284,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 643(N Morris) over Rockaway River built?

It was built in 1936, making it 89 years old in 2025.

What condition is CR 643(N Morris) 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 June 2023.

How much traffic does CR 643(N Morris) over Rockaway River carry?

About 6,133 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is CR 643(N Morris) over Rockaway River?

The structure is 48 ft (14.6 m) long with a longest span of 43 ft (13.1 m) and a deck 64 ft wide.

Who owns CR 643(N Morris) over Rockaway River?

It is owned by the County Highway Agency.