US Bridges

Maple Avenue over Cranbury Brook

Fair

Middlesex County, New Jersey · 0.3 MI S of Plainsboro RD · Structure no. 124B090

Built
1999
26 years old
Condition
Fair
inspected April 2023
Type
Slab
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
5,421
2023 count
Owner
County
County Highway Agency

About this bridge

Maple Avenue over Cranbury Brook is a prestressed concrete slab carrying Maple Avenue over Cranbury Brook in Middlesex County, New Jersey. It was built in 1999, so it is 26 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 5,421 vehicles a day, roughly 4% of them trucks, projected to reach 6,614 by 2043. The structure is 26 ft (7.9 m) long and 54 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMaple Avenue
CrossesCranbury Brook
Location0.3 MI S of Plainsboro RD
RouteCity Street 0
CountyMiddlesex County
StateNew Jersey
Coordinates40.32667, -74.60244
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span22 ft (6.7 m)
Deck width54 ft (16.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,421 (2023)
Projected traffic6,614 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 Maple Avenue over Cranbury Brook built?

It was built in 1999, making it 26 years old in 2025.

What condition is Maple Avenue over Cranbury 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 April 2023.

How much traffic does Maple Avenue over Cranbury Brook carry?

About 5,421 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Maple Avenue over Cranbury Brook?

The structure is 26 ft (7.9 m) long with a longest span of 22 ft (6.7 m) and a deck 54 ft wide.

Who owns Maple Avenue over Cranbury Brook?

It is owned by the County Highway Agency.