US Bridges

US 1 over Amboy Avenue (cr 501)

Good

Middlesex County, New Jersey · 0.75 MI N of I287&RT1 JCT · Structure no. 1204151

Built
1956
69 years old, rebuilt 2008
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
86 ft
1 main span
Daily traffic
104,694
2022 count
Owner
State
State Highway Agency

About this bridge

US 1 over Amboy Avenue (cr 501) is a steel stringer/multi-beam or girder carrying US 1 over Amboy Avenue (cr 501) in Middlesex County, New Jersey. It was built in 1956 and reconstructed in 2008, so it is 69 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 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 104,694 vehicles a day, roughly 4% of them trucks, projected to reach 125,633 by 2042. The structure is 86 ft (26.2 m) long and 114 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 1
CrossesAmboy Avenue (cr 501)
Location0.75 MI N of I287&RT1 JCT
RouteU.S. Route 1
Coordinates40.53594, -74.34367
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 inspectionAugust 2024
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 rating106.8 US tons
Inventory rating91.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length86 ft (26.2 m)
Longest span80 ft (24.4 m)
Deck width114 ft (34.8 m)
Roadway width107 ft (32.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic104,694 (2022)
Projected traffic125,633 by 2042
Trucks4%
Lanes on structure8
Traffic directionTwo-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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 1 over Amboy Avenue (cr 501) built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2008.

What condition is US 1 over Amboy Avenue (cr 501) 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 August 2024.

How much traffic does US 1 over Amboy Avenue (cr 501) carry?

About 104,694 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is US 1 over Amboy Avenue (cr 501)?

The structure is 86 ft (26.2 m) long with a longest span of 80 ft (24.4 m) and a deck 114 ft wide.

Who owns US 1 over Amboy Avenue (cr 501)?

It is owned by the State Highway Agency.