US Bridges

RTE 9D over Foundry Brook

Fair

Putnam County, New York · 3.4 MI.S.JCT.RTS.9D&301 · Structure no. 000000001006310

Built
1929
96 years old, rebuilt 1985
Condition
Fair
inspected June 2024
Type
Arch - Deck
Steel
Length
240 ft
1 main span
Daily traffic
7,200
2017 count
Owner
State
State Highway Agency

About this bridge

RTE 9D over Foundry Brook is a steel arch - deck carrying RTE 9D over Foundry Brook in Putnam County, New York. It was built in 1929 and reconstructed in 1985, so it is 96 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 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 7,200 vehicles a day, roughly 2% of them trucks, projected to reach 7,511 by 2041. The structure is 240 ft (73.2 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRTE 9D
CrossesFoundry Brook
Location3.4 MI.S.JCT.RTS.9D&301
RouteState Highway 9D
CountyPutnam County
StateNew York
Coordinates41.41873, -73.94597
Functional classRural Major Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
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 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 rating83.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1 (+6 approach)
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span134 ft (40.8 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,200 (2017)
Projected traffic7,511 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 statusEligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$12.6 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 9D over Foundry Brook built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1985.

What condition is RTE 9D over Foundry Brook 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 9D over Foundry Brook carry?

About 7,200 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is RTE 9D over Foundry Brook?

The structure is 240 ft (73.2 m) long with a longest span of 134 ft (40.8 m) and a deck 32 ft wide.

Who owns RTE 9D over Foundry Brook?

It is owned by the State Highway Agency.