US Bridges

Mt Hope-Rockawy RD over I-80

Fair

Morris County, New Jersey · 1.06 MI E of I-80 Exit 35 · Structure no. 1413161

Built
1958
67 years old, rebuilt 1985
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
189 ft
2 main spans
Daily traffic
7,663
2024 count
Owner
State
State Highway Agency

About this bridge

Mt Hope-Rockawy RD over I-80 is a steel continuous stringer/multi-beam or girder carrying Mt Hope-Rockawy RD over I-80 in Morris County, New Jersey. It was built in 1958 and reconstructed in 1985, so it is 67 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 7,663 vehicles a day, roughly 3% of them trucks, projected to reach 9,350 by 2044. The structure is 189 ft (57.6 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMt Hope-Rockawy RD
CrossesI-80
Location1.06 MI E of I-80 Exit 35
RouteCounty Highway 664
CountyMorris County
StateNew Jersey
Coordinates40.91083, -74.52681
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length189 ft (57.6 m)
Longest span92 ft (28 m)
Deck width45 ft (13.6 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,663 (2024)
Projected traffic9,350 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$183,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mt Hope-Rockawy RD over I-80 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1985.

What condition is Mt Hope-Rockawy RD over I-80 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 2024.

How much traffic does Mt Hope-Rockawy RD over I-80 carry?

About 7,663 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Mt Hope-Rockawy RD over I-80?

The structure is 189 ft (57.6 m) long with a longest span of 92 ft (28 m) and a deck 45 ft wide.

Who owns Mt Hope-Rockawy RD over I-80?

It is owned by the State Highway Agency.