US Bridges

Cranbury Road over Ireland Brook

Fair

Middlesex County, New Jersey · 0.06 S. JCT Rues Lane · Structure no. 123B200

Built
1981
44 years old, rebuilt 1994
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
39 ft
2 main spans
Daily traffic
22,553
2023 count
Owner
County
County Highway Agency

About this bridge

Cranbury Road over Ireland Brook is a concrete culvert carrying Cranbury Road over Ireland Brook in Middlesex County, New Jersey. It was built in 1981 and reconstructed in 1994, so it is 44 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 fair condition with a lowest component rating of 6 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 22,553 vehicles a day, roughly 4% of them trucks, projected to reach 27,518 by 2043. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCranbury Road
CrossesIreland Brook
Location0.06 S. JCT Rues Lane
RouteCounty Highway 535
CountyMiddlesex County
StateNew Jersey
Coordinates40.41658, -74.41325
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,553 (2023)
Projected traffic27,518 by 2043
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 Cranbury Road over Ireland Brook built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 1994.

What condition is Cranbury Road over Ireland Brook 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 March 2023.

How much traffic does Cranbury Road over Ireland Brook carry?

About 22,553 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Cranbury Road over Ireland Brook?

The structure is 39 ft (11.9 m) long with a longest span of 18 ft (5.5 m).

Who owns Cranbury Road over Ireland Brook?

It is owned by the County Highway Agency.