US Bridges

Madisonville Road over I-287

Fair

Somerset County, New Jersey · 8.1 MI North of I-78 JCT · Structure no. 1815179

Built
1966
59 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
219 ft
2 main spans
Daily traffic
3,106
2024 count
Owner
State
State Highway Agency

About this bridge

Madisonville Road over I-287 is a steel stringer/multi-beam or girder carrying Madisonville Road over I-287 in Somerset County, New Jersey. It was built in 1966, so it is 59 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 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 3,106 vehicles a day, roughly 3% of them trucks, projected to reach 3,789 by 2044. The structure is 219 ft (66.8 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMadisonville Road
CrossesI-287
Location8.1 MI North of I-78 JCT
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.72172, -74.54769
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 rating98 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length219 ft (66.8 m)
Longest span109 ft (33.2 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,106 (2024)
Projected traffic3,789 by 2044
Trucks3%
Lanes on structure2
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Madisonville Road over I-287 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Madisonville Road over I-287 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 April 2024.

How much traffic does Madisonville Road over I-287 carry?

About 3,106 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Madisonville Road over I-287?

The structure is 219 ft (66.8 m) long with a longest span of 109 ft (33.2 m) and a deck 40 ft wide.

Who owns Madisonville Road over I-287?

It is owned by the State Highway Agency.