US Bridges

Old TR RD (cr 535) over Millstone River

Fair

Mercer County, New Jersey · .5 MI N of CR 571 · Structure no. 1108602

Built
2000
25 years old
Condition
Fair
inspected March 2023
Type
Truss - Thru
Steel
Length
82 ft
1 main span
Daily traffic
9,495
2023 count
Owner
County
County Highway Agency

About this bridge

Old TR RD (cr 535) over Millstone River is a steel truss - thru carrying Old TR RD (cr 535) over Millstone River in Mercer County, New Jersey. It was built in 2000, so it is 25 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 5 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 9,495 vehicles a day, roughly 4% of them trucks, projected to reach 11,580 by 2043. The structure is 82 ft (25 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld TR RD (cr 535)
CrossesMillstone River
Location.5 MI N of CR 571
RouteCounty Highway 535
CountyMercer County
StateNew Jersey
Coordinates40.29126, -74.54873
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating21.1 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length82 ft (25 m)
Longest span78 ft (23.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,495 (2023)
Projected traffic11,580 by 2043
Trucks4%
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 Old TR RD (cr 535) over Millstone River built?

It was built in 2000, making it 25 years old in 2025.

What condition is Old TR RD (cr 535) over Millstone River 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 Old TR RD (cr 535) over Millstone River carry?

About 9,495 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Old TR RD (cr 535) over Millstone River?

The structure is 82 ft (25 m) long with a longest span of 78 ft (23.8 m) and a deck 30 ft wide.

Who owns Old TR RD (cr 535) over Millstone River?

It is owned by the County Highway Agency.