US Bridges

Union Hill Road over Matchaponix Brook

Good

Middlesex County, New Jersey · 3.2 Miles West of Route 9 · Structure no. 125B030

Built
2013
12 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
1 main span
Daily traffic
482
2023 count
Owner
County
County Highway Agency

About this bridge

Union Hill Road over Matchaponix Brook is a steel stringer/multi-beam or girder carrying Union Hill Road over Matchaponix Brook in Middlesex County, New Jersey. It was built in 2013, so it is 12 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 482 vehicles a day, roughly 1% of them trucks, projected to reach 588 by 2043. The structure is 69 ft (21 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesUnion Hill Road
CrossesMatchaponix Brook
Location3.2 Miles West of Route 9
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.32249, -74.35949
Functional classUrban Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.2 US tons
Inventory rating64.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length69 ft (21 m)
Longest span67 ft (20.4 m)
Deck width41 ft (12.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic482 (2023)
Projected traffic588 by 2043
Trucks1%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Union Hill Road over Matchaponix Brook built?

It was built in 2013, making it 12 years old in 2025.

What condition is Union Hill Road over Matchaponix 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 May 2023.

How much traffic does Union Hill Road over Matchaponix Brook carry?

About 482 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Union Hill Road over Matchaponix Brook?

The structure is 69 ft (21 m) long with a longest span of 67 ft (20.4 m) and a deck 41 ft wide.

Who owns Union Hill Road over Matchaponix Brook?

It is owned by the County Highway Agency.