US Bridges

Mountain Avenue over Rehobath Brook

Fair

Middlesex County, New Jersey · 1MILE W of N Randolfville · Structure no. 122B516

Built
1995
30 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
607
2023 count
Owner
County
County Highway Agency

About this bridge

Mountain Avenue over Rehobath Brook is a concrete culvert carrying Mountain Avenue over Rehobath Brook in Middlesex County, New Jersey. It was built in 1995, so it is 30 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 607 vehicles a day, roughly 3% of them trucks, projected to reach 741 by 2043. The structure is 23 ft (7 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMountain Avenue
CrossesRehobath Brook
Location1MILE W of N Randolfville
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.56175, -74.47889
Functional classUrban Collector

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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to 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 length23 ft (7 m)
Longest span10 ft (3 m)
Deck width58 ft (17.7 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic607 (2023)
Projected traffic741 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mountain Avenue over Rehobath Brook built?

It was built in 1995, making it 30 years old in 2025.

What condition is Mountain Avenue over Rehobath 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 Mountain Avenue over Rehobath Brook carry?

About 607 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Mountain Avenue over Rehobath Brook?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 58 ft wide.

Who owns Mountain Avenue over Rehobath Brook?

It is owned by the County Highway Agency.