US Bridges

RTE 9 over Louisa Street

Fair

Westchester County, New York · 0.8 MI S JCT Rts 9 & 6 · Structure no. 000000001074030

Built
1990
35 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
92 ft
1 main span
Daily traffic
38,253
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 9 over Louisa Street is a prestressed concrete box beam or girders - multiple carrying RTE 9 over Louisa Street in Westchester County, New York. It was built in 1990, so it is 35 years old, younger 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 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 38,253 vehicles a day, roughly 6% of them trucks, projected to reach 53,963 by 2041. The structure is 92 ft (28 m) long and 65 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRTE 9
CrossesLouisa Street
Location0.8 MI S JCT Rts 9 & 6
RouteU.S. Route 9
Coordinates41.2769, -73.93097
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 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 alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length92 ft (28 m)
Longest span90 ft (27.4 m)
Deck width65 ft (19.8 m)
Roadway width62 ft (18.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,253 (2021)
Projected traffic53,963 by 2041
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$4.4 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 9 over Louisa Street built?

It was built in 1990, making it 35 years old in 2025.

What condition is RTE 9 over Louisa Street 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 June 2024.

How much traffic does RTE 9 over Louisa Street carry?

About 38,253 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is RTE 9 over Louisa Street?

The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 65 ft wide.

Who owns RTE 9 over Louisa Street?

It is owned by the State Highway Agency.