US Bridges

Alexander Road over Tributary to Stony Brook

Good

Mercer County, New Jersey · .22 M N of D&r Canal · Structure no. 1103311

Built
2019
6 years old
Condition
Good
inspected March 2023
Type
Frame
Concrete
Length
25 ft
1 main span
Daily traffic
22,260
2023 count
Owner
County
County Highway Agency

About this bridge

Alexander Road over Tributary to Stony Brook is a concrete frame carrying Alexander Road over Tributary to Stony Brook in Mercer County, New Jersey. It was built in 2019, so it is 6 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 22,260 vehicles a day, roughly 4% of them trucks, projected to reach 26,712 by 2043. The structure is 25 ft (7.6 m) long and 53 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesAlexander Road
CrossesTributary to Stony Brook
Location.22 M N of D&r Canal
RouteCity Street 0
CountyMercer County
StateNew Jersey
Coordinates40.33427, -74.65433
Functional classUrban 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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span22 ft (6.7 m)
Deck width53 ft (16.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,260 (2023)
Projected traffic26,712 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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$26,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Alexander Road over Tributary to Stony Brook built?

It was built in 2019, making it 6 years old in 2025.

What condition is Alexander Road over Tributary to Stony Brook 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 March 2023.

How much traffic does Alexander Road over Tributary to Stony Brook carry?

About 22,260 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Alexander Road over Tributary to Stony Brook?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 53 ft wide.

Who owns Alexander Road over Tributary to Stony Brook?

It is owned by the County Highway Agency.