US Bridges

CR 634 (n.Main St) over Rockaway River

Fair

Morris County, New Jersey · .5 Miles South of I-80 · Structure no. 1401004

Built
1950
75 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
11,478
2023 count
Owner
County
County Highway Agency

About this bridge

CR 634 (n.Main St) over Rockaway River is a steel stringer/multi-beam or girder carrying CR 634 (n.Main St) over Rockaway River in Morris County, New Jersey. It was built in 1950, so it is 75 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 11,478 vehicles a day, roughly 4% of them trucks, projected to reach 14,006 by 2043. The structure is 56 ft (17.1 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 634 (n.Main St)
CrossesRockaway River
Location.5 Miles South of I-80
RouteCounty Highway 634
CountyMorris County
StateNew Jersey
Coordinates40.90356, -74.57814
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 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 evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length56 ft (17.1 m)
Longest span52 ft (15.8 m)
Deck width42 ft (12.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,478 (2023)
Projected traffic14,006 by 2043
Trucks4%
Lanes on structure2
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$294,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 634 (n.Main St) over Rockaway River built?

It was built in 1950, making it 75 years old in 2025.

What condition is CR 634 (n.Main St) 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 634 (n.Main St) over Rockaway River carry?

About 11,478 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is CR 634 (n.Main St) over Rockaway River?

The structure is 56 ft (17.1 m) long with a longest span of 52 ft (15.8 m) and a deck 42 ft wide.

Who owns CR 634 (n.Main St) over Rockaway River?

It is owned by the County Highway Agency.