US Bridges

Annin Road over I-287

Fair

Somerset County, New Jersey · 0.7 MI S of I-287 Exit 26 · Structure no. 1815162

Built
1965
60 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
208 ft
4 main spans
Daily traffic
2,850
2024 count
Owner
State
State Highway Agency

About this bridge

Annin Road over I-287 is a prestressed concrete stringer/multi-beam or girder carrying Annin Road over I-287 in Somerset County, New Jersey. It was built in 1965, so it is 60 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 2,850 vehicles a day, roughly 1% of them trucks, projected to reach 3,420 by 2044. The structure is 208 ft (63.4 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAnnin Road
CrossesI-287
Location0.7 MI S of I-287 Exit 26
RouteCity Street 287
CountySomerset County
StateNew Jersey
Coordinates40.68394, -74.58889
Functional classUrban Local

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.
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 alignment7: Better than present minimum criteria
Operating rating61 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length208 ft (63.4 m)
Longest span79 ft (24.1 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,850 (2024)
Projected traffic3,420 by 2044
Trucks1%
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 Annin Road over I-287 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Annin 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 Annin Road over I-287 carry?

About 2,850 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Annin Road over I-287?

The structure is 208 ft (63.4 m) long with a longest span of 79 ft (24.1 m) and a deck 40 ft wide.

Who owns Annin Road over I-287?

It is owned by the State Highway Agency.