US Bridges

RTE 9 over White Clay Kill

Poor

Dutchess County, New York · 3.8 MI N JCT Rts 9+199 · Structure no. 000000001005380

Built
1928
97 years old
Condition
Poor
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
7,052
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 9 over White Clay Kill is a steel stringer/multi-beam or girder carrying RTE 9 over White Clay Kill in Dutchess County, New York. It was built in 1928, so it is 97 years old, older than the New York average of 53 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 7,052 vehicles a day, roughly 7% of them trucks, projected to reach 7,118 by 2041. The structure is 33 ft (10.1 m) long and 43 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

CarriesRTE 9
CrossesWhite Clay Kill
Location3.8 MI N JCT Rts 9+199
RouteU.S. Route 9
Coordinates42.04474, -73.84737
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating94 US tons
Inventory rating56 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,052 (2021)
Projected traffic7,118 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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$1.5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 9 over White Clay Kill built?

It was built in 1928, making it 97 years old in 2025.

What condition is RTE 9 over White Clay Kill 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 November 2023.

How much traffic does RTE 9 over White Clay Kill carry?

About 7,052 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is RTE 9 over White Clay Kill?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns RTE 9 over White Clay Kill?

It is owned by the State Highway Agency.