US Bridges

North Maple Ave. over I-287 NB

Poor

Somerset County, New Jersey · 0.19 MI S of US202 · Structure no. 1815180

Built
1966
59 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
136 ft
3 main spans
Daily traffic
11,042
2024 count
Owner
State
State Highway Agency

About this bridge

North Maple Ave. over I-287 NB is a steel stringer/multi-beam or girder carrying North Maple Ave. over I-287 NB 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 11,042 vehicles a day, roughly 4% of them trucks, projected to reach 13,251 by 2044. The structure is 136 ft (41.5 m) long and 56 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNorth Maple Ave.
CrossesI-287 NB
Location0.19 MI S of US202
RouteCity Street 0
CountySomerset County
StateNew Jersey
Coordinates40.72899, -74.53914
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span75 ft (22.9 m)
Deck width56 ft (17.1 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,042 (2024)
Projected traffic13,251 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$292,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was North Maple Ave. over I-287 NB built?

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

What condition is North Maple Ave. over I-287 NB in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does North Maple Ave. over I-287 NB carry?

About 11,042 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is North Maple Ave. over I-287 NB?

The structure is 136 ft (41.5 m) long with a longest span of 75 ft (22.9 m) and a deck 56 ft wide.

Who owns North Maple Ave. over I-287 NB?

It is owned by the State Highway Agency.