US Bridges

Applegarth Road over Millstone River

Good

Middlesex County, New Jersey · 0.49 MI North of Nj 33 · Structure no. 125B152

Built
1995
30 years old
Condition
Good
inspected April 2023
Type
Arch - Deck
Aluminum, Wrought Iron, or Cast Iron
Length
45 ft
2 main spans
Daily traffic
11,333
2023 count
Owner
County
County Highway Agency

About this bridge

Applegarth Road over Millstone River is a aluminum, wrought iron, or cast iron arch - deck carrying Applegarth Road over Millstone River in Middlesex County, New Jersey. It was built in 1995, so it is 30 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 11,333 vehicles a day, roughly 4% of them trucks, projected to reach 13,816 by 2043. The structure is 45 ft (13.7 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesApplegarth Road
CrossesMillstone River
Location0.49 MI North of Nj 33
RouteCounty Highway 619
CountyMiddlesex County
StateNew Jersey
Coordinates40.27445, -74.47219
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans2
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span20 ft (6.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,333 (2023)
Projected traffic13,816 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$488,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Applegarth Road over Millstone River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Applegarth Road over Millstone River 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 Applegarth Road over Millstone River carry?

About 11,333 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Applegarth Road over Millstone River?

The structure is 45 ft (13.7 m) long with a longest span of 20 ft (6.1 m) and a deck 33 ft wide.

Who owns Applegarth Road over Millstone River?

It is owned by the County Highway Agency.