US Bridges

Basin Road over Assunpink Creek

Good

Mercer County, New Jersey · .44 MI S of Bks-Basin RD · Structure no. 1100015

Built
2010
15 years old
Condition
Good
inspected February 2023
Type
Truss - Thru
Steel
Length
73 ft
1 main span
Daily traffic
1,325
2023 count
Owner
County
County Highway Agency

About this bridge

Basin Road over Assunpink Creek is a steel truss - thru carrying Basin Road over Assunpink Creek in Mercer County, New Jersey. It was built in 2010, so it is 15 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 1,325 vehicles a day, roughly 3% of them trucks, projected to reach 1,584 by 2043. The structure is 73 ft (22.3 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesBasin Road
CrossesAssunpink Creek
Location.44 MI S of Bks-Basin RD
RouteCity Street 0
CountyMercer County
StateNew Jersey
Coordinates40.26856, -74.70164
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length73 ft (22.3 m)
Longest span68 ft (20.7 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,325 (2023)
Projected traffic1,584 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Basin Road over Assunpink Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is Basin Road over Assunpink 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 February 2023.

How much traffic does Basin Road over Assunpink Creek carry?

About 1,325 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Basin Road over Assunpink Creek?

The structure is 73 ft (22.3 m) long with a longest span of 68 ft (20.7 m) and a deck 32 ft wide.

Who owns Basin Road over Assunpink Creek?

It is owned by the County Highway Agency.