US Bridges

RTE I87 over RTE 9A

Fair

Westchester County, New York · JCT I87 & SH9A @ Ardsley · Structure no. 000000005006090

Built
1954
71 years old, rebuilt 2011
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
114 ft
1 main span
Daily traffic
39,166
2018 count
Owner
Toll Authority
State Toll Authority

About this bridge

RTE I87 over RTE 9A is a steel stringer/multi-beam or girder carrying RTE I87 over RTE 9A in Westchester County, New York. It was built in 1954 and reconstructed in 2011, so it is 71 years old, older than the New York average of 53 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 39,166 vehicles a day, roughly 19% of them trucks, projected to reach 66,323 by 2041. The structure is 114 ft (34.7 m) long and 111 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesRTE I87
CrossesRTE 9A
LocationJCT I87 & SH9A @ Ardsley
RouteInterstate 87
CountyWestchester County
StateNew York
Coordinates41.00898, -73.85102
Functional classUrban Principal Arterial - Interstate

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.2 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length114 ft (34.7 m)
Longest span109 ft (33.2 m)
Deck width111 ft (33.8 m)
Roadway width105 ft (31.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,166 (2018)
Projected traffic66,323 by 2041
Trucks19%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.8 mi (19 km)
TollOn an Interstate toll segment under Secretarial agreement
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$21 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I87 over RTE 9A built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2011.

What condition is RTE I87 over RTE 9A 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 July 2024.

How much traffic does RTE I87 over RTE 9A carry?

About 39,166 vehicles per day (2018 count), of which roughly 19% are trucks.

How long is RTE I87 over RTE 9A?

The structure is 114 ft (34.7 m) long with a longest span of 109 ft (33.2 m) and a deck 111 ft wide.

Who owns RTE I87 over RTE 9A?

It is owned by the State Toll Authority.