US Bridges

Nj 147 over Grassy Sound

Fair

Cape May County, New Jersey · 2.4 MI E of US9&NJ147 JCT · Structure no. 0517151

Built
1994
31 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,773 ft
3 main spans
Daily traffic
17,155
2024 count
Owner
State
State Highway Agency

About this bridge

Nj 147 over Grassy Sound is a steel continuous stringer/multi-beam or girder carrying Nj 147 over Grassy Sound in Cape May County, New Jersey. It was built in 1994, so it is 31 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 17,155 vehicles a day, roughly 7% of them trucks, projected to reach 20,586 by 2044. The structure is 2,773 ft (845.2 m) long and 79 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNj 147
CrossesGrassy Sound
Location2.4 MI E of US9&NJ147 JCT
RouteState Highway 147
CountyCape May County
StateNew Jersey
Coordinates39.03007, -74.81671
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+24 approach)
Design loadHS 20 + Mod
Structure length2,773 ft (845.2 m)
Longest span170 ft (51.8 m)
Deck width79 ft (24.2 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic17,155 (2024)
Projected traffic20,586 by 2044
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Nj 147 over Grassy Sound built?

It was built in 1994, making it 31 years old in 2025.

What condition is Nj 147 over Grassy Sound 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 September 2024.

How much traffic does Nj 147 over Grassy Sound carry?

About 17,155 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Nj 147 over Grassy Sound?

The structure is 2,773 ft (845.2 m) long with a longest span of 170 ft (51.8 m) and a deck 79 ft wide.

Who owns Nj 147 over Grassy Sound?

It is owned by the State Highway Agency.