US Bridges

Sidney Road over Ambrose Brook

Good

Middlesex County, New Jersey · 0.67 Miles East of SR 18 · Structure no. 122B133

Built
2011
14 years old
Condition
Good
inspected November 2023
Type
Frame
Concrete
Length
20 ft
1 main span
Daily traffic
8,076
2023 count
Owner
County
County Highway Agency

About this bridge

Sidney Road over Ambrose Brook is a concrete frame carrying Sidney Road over Ambrose Brook in Middlesex County, New Jersey. It was built in 2011, so it is 14 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 8,076 vehicles a day, roughly 1% of them trucks, projected to reach 9,854 by 2043. The structure is 20 ft (6.1 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSidney Road
CrossesAmbrose Brook
Location0.67 Miles East of SR 18
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.54735, -74.46417
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating110.1 US tons
Inventory rating94 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width42 ft (12.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,076 (2023)
Projected traffic9,854 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 Sidney Road over Ambrose Brook built?

It was built in 2011, making it 14 years old in 2025.

What condition is Sidney Road over Ambrose 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 November 2023.

How much traffic does Sidney Road over Ambrose Brook carry?

About 8,076 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Sidney Road over Ambrose Brook?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 42 ft wide.

Who owns Sidney Road over Ambrose Brook?

It is owned by the County Highway Agency.