US Bridges

N Main ST (cr 640) over Trenton Line (csx)

Fair

Mercer County, New Jersey · 3.2MI N of I295&NJ31 JCT · Structure no. 1150161

Built
1996
29 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
2,521
2023 count
Owner
Unknown
Unknown

About this bridge

N Main ST (cr 640) over Trenton Line (csx) is a steel stringer/multi-beam or girder carrying N Main ST (cr 640) over Trenton Line (csx) in Mercer County, New Jersey. It was built in 1996, so it is 29 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 2,521 vehicles a day, roughly 4% of them trucks, projected to reach 3,076 by 2043. The structure is 46 ft (14 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesN Main ST (cr 640)
CrossesTrenton Line (csx)
Location3.2MI N of I295&NJ31 JCT
RouteCounty Highway 640
CountyMercer County
StateNew Jersey
Coordinates40.33676, -74.7936
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating110.1 US tons
Inventory rating66 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length46 ft (14 m)
Longest span44 ft (13.4 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,521 (2023)
Projected traffic3,076 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerUnknown
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$238,000 (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was N Main ST (cr 640) over Trenton Line (csx) built?

It was built in 1996, making it 29 years old in 2025.

What condition is N Main ST (cr 640) over Trenton Line (csx) 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 October 2023.

How much traffic does N Main ST (cr 640) over Trenton Line (csx) carry?

About 2,521 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is N Main ST (cr 640) over Trenton Line (csx)?

The structure is 46 ft (14 m) long with a longest span of 44 ft (13.4 m) and a deck 32 ft wide.

Who owns N Main ST (cr 640) over Trenton Line (csx)?

It is owned by the Unknown and maintained by the State Highway Agency.