US Bridges

Dunhams Corner Rd. over Ireland Brook Tributary

Fair

Middlesex County, New Jersey · 0.2 Mile East of Njtpk · Structure no. 124B058

Built
1985
40 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
6,076
2023 count
Owner
County
County Highway Agency

About this bridge

Dunhams Corner Rd. over Ireland Brook Tributary is a concrete culvert carrying Dunhams Corner Rd. over Ireland Brook Tributary in Middlesex County, New Jersey. It was built in 1985, so it is 40 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 6,076 vehicles a day, roughly 4% of them trucks, projected to reach 7,414 by 2043. The structure is 20 ft (6.1 m) long and 50 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesDunhams Corner Rd.
CrossesIreland Brook Tributary
Location0.2 Mile East of Njtpk
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.40672, -74.4465
Functional classUrban Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
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
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 rating66 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width50 ft (15.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,076 (2023)
Projected traffic7,414 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Dunhams Corner Rd. over Ireland Brook Tributary built?

It was built in 1985, making it 40 years old in 2025.

What condition is Dunhams Corner Rd. over Ireland Brook Tributary 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 Dunhams Corner Rd. over Ireland Brook Tributary carry?

About 6,076 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Dunhams Corner Rd. over Ireland Brook Tributary?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 50 ft wide.

Who owns Dunhams Corner Rd. over Ireland Brook Tributary?

It is owned by the County Highway Agency.