US Bridges

River Road over Stony Kill

Fair

Columbia County, New York · 1 MI NE of Chatham · Structure no. 000000003222050

Built
1995
30 years old
Condition
Fair
inspected October 2023
Type
Truss - Thru
Steel
Length
74 ft
1 main span
Daily traffic
24
2020 count
Owner
County
County Highway Agency

About this bridge

River Road over Stony Kill is a steel truss - thru carrying River Road over Stony Kill in Columbia County, New York. It was built in 1995, so it is 30 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 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 24 vehicles a day, roughly 7% of them trucks, projected to reach 34 by 2040. The structure is 74 ft (22.6 m) long and 17 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesRiver Road
CrossesStony Kill
Location1 MI NE of Chatham
CountyColumbia County
StateNew York
Coordinates42.3758, -73.58612
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 25 or greater
Structure length74 ft (22.6 m)
Longest span73 ft (22.2 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2020)
Projected traffic34 by 2040
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2.5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was River Road over Stony Kill built?

It was built in 1995, making it 30 years old in 2025.

What condition is River Road over Stony Kill 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 October 2023.

How much traffic does River Road over Stony Kill carry?

About 24 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is River Road over Stony Kill?

The structure is 74 ft (22.6 m) long with a longest span of 73 ft (22.2 m) and a deck 17 ft wide.

Who owns River Road over Stony Kill?

It is owned by the County Highway Agency.