US Bridges

Chimney Rock Road over I-287

Good

Somerset County, New Jersey · 0.4 M. N.Of I-287 Exit 13 · Structure no. 1812161

Built
2015
10 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
266 ft
2 main spans
Daily traffic
5,454
2024 count
Owner
State
State Highway Agency

About this bridge

Chimney Rock Road over I-287 is a steel continuous stringer/multi-beam or girder carrying Chimney Rock Road over I-287 in Somerset County, New Jersey. It was built in 2015, so it is 10 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 5,454 vehicles a day, roughly 3% of them trucks, projected to reach 6,655 by 2044. The structure is 266 ft (81.1 m) long and 63 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesChimney Rock Road
CrossesI-287
Location0.4 M. N.Of I-287 Exit 13
RouteCounty Highway 675
CountySomerset County
StateNew Jersey
Coordinates40.57076, -74.56209
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating52.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length266 ft (81.1 m)
Longest span133 ft (40.5 m)
Deck width63 ft (19.1 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,454 (2024)
Projected traffic6,655 by 2044
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Chimney Rock Road over I-287 built?

It was built in 2015, making it 10 years old in 2025.

What condition is Chimney Rock Road over I-287 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 September 2024.

How much traffic does Chimney Rock Road over I-287 carry?

About 5,454 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Chimney Rock Road over I-287?

The structure is 266 ft (81.1 m) long with a longest span of 133 ft (40.5 m) and a deck 63 ft wide.

Who owns Chimney Rock Road over I-287?

It is owned by the State Highway Agency.