US Bridges

US 9 NB over CR 604 (green St)

Fair

Middlesex County, New Jersey · 1.76 MI N of Nj 184 · Structure no. 1210152

Built
1937
88 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
67 ft
1 main span
Daily traffic
23,799
2023 count
Owner
State
State Highway Agency

About this bridge

US 9 NB over CR 604 (green St) is a steel stringer/multi-beam or girder carrying US 9 NB over CR 604 (green St) in Middlesex County, New Jersey. It was built in 1937, so it is 88 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 5 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 23,799 vehicles a day, roughly 4% of them trucks, projected to reach 28,558 by 2043. The structure is 67 ft (20.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 9 NB
CrossesCR 604 (green St)
Location1.76 MI N of Nj 184
RouteU.S. Route 9
CountyMiddlesex County
StateNew Jersey
Coordinates40.55854, -74.29469
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length67 ft (20.4 m)
Longest span61 ft (18.6 m)
Deck width43 ft (13.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,799 (2023)
Projected traffic28,558 by 2043
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 9 NB over CR 604 (green St) built?

It was built in 1937, making it 88 years old in 2025.

What condition is US 9 NB over CR 604 (green St) 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 US 9 NB over CR 604 (green St) carry?

About 23,799 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 9 NB over CR 604 (green St)?

The structure is 67 ft (20.4 m) long with a longest span of 61 ft (18.6 m) and a deck 43 ft wide.

Who owns US 9 NB over CR 604 (green St)?

It is owned by the State Highway Agency.