US Bridges

US 9 over Mill Creek

Fair

Ocean County, New Jersey · 0.06 MI N of Nj 72 · Structure no. 1501159

Built
1924
101 years old, rebuilt 1968
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
34 ft
1 main span
Daily traffic
20,800
2022 count
Owner
State
State Highway Agency

About this bridge

US 9 over Mill Creek is a concrete slab carrying US 9 over Mill Creek in Ocean County, New Jersey. It was built in 1924 and reconstructed in 1968, so it is 101 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 20,800 vehicles a day, roughly 4% of them trucks, projected to reach 25,380 by 2042. The structure is 34 ft (10.4 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 9
CrossesMill Creek
Location0.06 MI N of Nj 72
RouteU.S. Route 9
Coordinates39.69453, -74.25973
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span30 ft (9.1 m)
Deck width70 ft (21.3 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,800 (2022)
Projected traffic25,380 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 9 over Mill Creek built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1968.

What condition is US 9 over Mill Creek 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 2024.

How much traffic does US 9 over Mill Creek carry?

About 20,800 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is US 9 over Mill Creek?

The structure is 34 ft (10.4 m) long with a longest span of 30 ft (9.1 m) and a deck 70 ft wide.

Who owns US 9 over Mill Creek?

It is owned by the State Highway Agency.