US Bridges

US 9 over Ernston Road (CR.673)

Good

Middlesex County, New Jersey · 1.23 Miles S of Gsp · Structure no. 1207152

Built
1993
32 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
119 ft
1 main span
Daily traffic
93,049
2023 count
Owner
State
State Highway Agency

About this bridge

US 9 over Ernston Road (CR.673) is a steel stringer/multi-beam or girder carrying US 9 over Ernston Road (CR.673) in Middlesex County, New Jersey. It was built in 1993, so it is 32 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 93,049 vehicles a day, roughly 4% of them trucks, projected to reach 111,659 by 2043. The structure is 119 ft (36.3 m) long and 124 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 9
CrossesErnston Road (CR.673)
Location1.23 Miles S of Gsp
RouteU.S. Route 9
CountyMiddlesex County
StateNew Jersey
Coordinates40.45414, -74.29691
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating85 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length119 ft (36.3 m)
Longest span116 ft (35.4 m)
Deck width124 ft (37.8 m)
Roadway width108 ft (32.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic93,049 (2023)
Projected traffic111,659 by 2043
Trucks4%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 over Ernston Road (CR.673) built?

It was built in 1993, making it 32 years old in 2025.

What condition is US 9 over Ernston Road (CR.673) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does US 9 over Ernston Road (CR.673) carry?

About 93,049 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 9 over Ernston Road (CR.673)?

The structure is 119 ft (36.3 m) long with a longest span of 116 ft (35.4 m) and a deck 124 ft wide.

Who owns US 9 over Ernston Road (CR.673)?

It is owned by the State Highway Agency.