US Bridges

US Route 9 over Debois Creek

Good

Monmouth County, New Jersey · 1.86 MI S of Nj 33F JCT · Structure no. 1301151

Built
1973
52 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
35 ft
2 main spans
Daily traffic
55,229
2023 count
Owner
State
State Highway Agency

About this bridge

US Route 9 over Debois Creek is a concrete culvert carrying US Route 9 over Debois Creek in Monmouth County, New Jersey. It was built in 1973, so it is 52 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 55,229 vehicles a day, roughly 4% of them trucks, projected to reach 66,275 by 2043. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS Route 9
CrossesDebois Creek
Location1.86 MI S of Nj 33F JCT
RouteU.S. Route 9
Coordinates40.21794, -74.26353
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span17 ft (5.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55,229 (2023)
Projected traffic66,275 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US Route 9 over Debois Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is US Route 9 over Debois Creek 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 May 2023.

How much traffic does US Route 9 over Debois Creek carry?

About 55,229 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US Route 9 over Debois Creek?

The structure is 35 ft (10.7 m) long with a longest span of 17 ft (5.2 m).

Who owns US Route 9 over Debois Creek?

It is owned by the State Highway Agency.