US Bridges

West Oak ST(CR624) over I-287 NB

Good

Somerset County, New Jersey · 1.48MI. No. of Intrch 26 · Structure no. 1815171

Built
1968
57 years old, rebuilt 2006
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
133 ft
3 main spans
Daily traffic
5,860
2023 count
Owner
State
State Highway Agency

About this bridge

West Oak ST(CR624) over I-287 NB is a steel stringer/multi-beam or girder carrying West Oak ST(CR624) over I-287 NB in Somerset County, New Jersey. It was built in 1968 and reconstructed in 2006, so it is 57 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,860 vehicles a day, roughly 3% of them trucks, projected to reach 7,032 by 2043. The structure is 133 ft (40.5 m) long and 45 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesWest Oak ST(CR624)
CrossesI-287 NB
Location1.48MI. No. of Intrch 26
RouteCounty Highway 624
CountySomerset County
StateNew Jersey
Coordinates40.70561, -74.56157
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span72 ft (21.9 m)
Deck width45 ft (13.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,860 (2023)
Projected traffic7,032 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$258,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was West Oak ST(CR624) over I-287 NB built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2006.

What condition is West Oak ST(CR624) over I-287 NB in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does West Oak ST(CR624) over I-287 NB carry?

About 5,860 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is West Oak ST(CR624) over I-287 NB?

The structure is 133 ft (40.5 m) long with a longest span of 72 ft (21.9 m) and a deck 45 ft wide.

Who owns West Oak ST(CR624) over I-287 NB?

It is owned by the State Highway Agency.