US Bridges

Cranbury RD (535) over New Jersey 18

Poor

Middlesex County, New Jersey · 2.5 Miles South of Nj Tpk · Structure no. 1212151

Built
1963
62 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
164 ft
2 main spans
Daily traffic
22,324
2022 count
Owner
State
State Highway Agency

About this bridge

Cranbury RD (535) over New Jersey 18 is a steel stringer/multi-beam or girder carrying Cranbury RD (535) over New Jersey 18 in Middlesex County, New Jersey. It was built in 1963, so it is 62 years old, older than the New Jersey average of 58.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 22,324 vehicles a day, roughly 4% of them trucks, projected to reach 2,788 by 2042. The structure is 164 ft (50 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCranbury RD (535)
CrossesNew Jersey 18
Location2.5 Miles South of Nj Tpk
RouteCounty Highway 535
CountyMiddlesex County
StateNew Jersey
Coordinates40.43958, -74.39369
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length164 ft (50 m)
Longest span78 ft (23.8 m)
Deck width63 ft (19.1 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic22,324 (2022)
Projected traffic2,788 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cranbury RD (535) over New Jersey 18 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Cranbury RD (535) over New Jersey 18 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Cranbury RD (535) over New Jersey 18 carry?

About 22,324 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Cranbury RD (535) over New Jersey 18?

The structure is 164 ft (50 m) long with a longest span of 78 ft (23.8 m) and a deck 63 ft wide.

Who owns Cranbury RD (535) over New Jersey 18?

It is owned by the State Highway Agency.