US Bridges

Nj 29 NB over Parkside Ave (cr 636)

Fair

Mercer County, New Jersey · 0.73 MI S of CR 579 JCT · Structure no. 1107150

Built
1956
69 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
19,093
2022 count
Owner
State
State Highway Agency

About this bridge

Nj 29 NB over Parkside Ave (cr 636) is a steel stringer/multi-beam or girder carrying Nj 29 NB over Parkside Ave (cr 636) in Mercer County, New Jersey. It was built in 1956, so it is 69 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 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 19,093 vehicles a day, roughly 5% of them trucks, projected to reach 22,911 by 2042. The structure is 65 ft (19.8 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNj 29 NB
CrossesParkside Ave (cr 636)
Location0.73 MI S of CR 579 JCT
RouteState Highway 29
CountyMercer County
StateNew Jersey
Coordinates40.23062, -74.7927
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating56 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span63 ft (19.2 m)
Deck width44 ft (13.4 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,093 (2022)
Projected traffic22,911 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nj 29 NB over Parkside Ave (cr 636) built?

It was built in 1956, making it 69 years old in 2025.

What condition is Nj 29 NB over Parkside Ave (cr 636) 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 December 2023.

How much traffic does Nj 29 NB over Parkside Ave (cr 636) carry?

About 19,093 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Nj 29 NB over Parkside Ave (cr 636)?

The structure is 65 ft (19.8 m) long with a longest span of 63 ft (19.2 m) and a deck 44 ft wide.

Who owns Nj 29 NB over Parkside Ave (cr 636)?

It is owned by the State Highway Agency.