US Bridges

29NB Ramp to 129NB over Nj 129 NB & Nj Transit

Fair

Mercer County, New Jersey · 1.64MI N of I-295&NJ29JCT · Structure no. 1130156

Built
1995
30 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
465 ft
3 main spans
Daily traffic
13,252
2024 count
Owner
State
State Highway Agency

About this bridge

29NB Ramp to 129NB over Nj 129 NB & Nj Transit is a steel continuous stringer/multi-beam or girder carrying 29NB Ramp to 129NB over Nj 129 NB & Nj Transit in Mercer 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 13,252 vehicles a day, roughly 5% of them trucks, projected to reach 16,170 by 2044. The structure is 465 ft (141.7 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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Carries29NB Ramp to 129NB
CrossesNj 129 NB & Nj Transit
Location1.64MI N of I-295&NJ29JCT
RouteState Highway 29
CountyMercer County
StateNew Jersey
Coordinates40.19284, -74.7509
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
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 alignment6: Equal to present minimum criteria
Operating rating86 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20 + Mod
Structure length465 ft (141.7 m)
Longest span145 ft (44.2 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,252 (2024)
Projected traffic16,170 by 2044
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 29NB Ramp to 129NB over Nj 129 NB & Nj Transit built?

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

What condition is 29NB Ramp to 129NB over Nj 129 NB & Nj Transit 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 July 2024.

How much traffic does 29NB Ramp to 129NB over Nj 129 NB & Nj Transit carry?

About 13,252 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 29NB Ramp to 129NB over Nj 129 NB & Nj Transit?

The structure is 465 ft (141.7 m) long with a longest span of 145 ft (44.2 m) and a deck 33 ft wide.

Who owns 29NB Ramp to 129NB over Nj 129 NB & Nj Transit?

It is owned by the State Highway Agency.