US Bridges

RTE 9A over Henry Hudson Parkway Sou

Fair

New York County, New York · SH 9A & Spuyten Duyvil Ck · Structure no. 000000005521258

Built
1937
88 years old, rebuilt 2020
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
2,409 ft
69 main spans
Daily traffic
77,015
2019 count
Owner
Toll Authority
Local Toll Authority

About this bridge

RTE 9A over Henry Hudson Parkway Sou is a steel stringer/multi-beam or girder carrying RTE 9A over Henry Hudson Parkway Sou in New York County, New York. It was built in 1937 and reconstructed in 2020, so it is 88 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 77,015 vehicles a day, roughly 1% of them trucks, projected to reach 94,959 by 2041. The structure is 2,409 ft (734.3 m) long and 52 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesRTE 9A
CrossesHenry Hudson Parkway Sou
LocationSH 9A & Spuyten Duyvil Ck
RouteState Highway 9A
CountyNew York County
StateNew York
Coordinates40.87834, -73.92137
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans69
Design loadH 20
Structure length2,409 ft (734.3 m)
Longest span108 ft (32.9 m)
Deck width52 ft (15.7 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deck18 ft (5.6 m)

Traffic and service

Average daily traffic77,015 (2019)
Projected traffic94,959 by 2041
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed9.9 mi (16 km)
TollToll bridge
National Highway SystemYes

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$97 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was RTE 9A over Henry Hudson Parkway Sou built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 2020.

What condition is RTE 9A over Henry Hudson Parkway Sou 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 November 2023.

How much traffic does RTE 9A over Henry Hudson Parkway Sou carry?

About 77,015 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is RTE 9A over Henry Hudson Parkway Sou?

The structure is 2,409 ft (734.3 m) long with a longest span of 108 ft (32.9 m) and a deck 52 ft wide.

Who owns RTE 9A over Henry Hudson Parkway Sou?

It is owned by the Local Toll Authority.