US Bridges

County Road 9 over 90IX RTE I90 Stony Kil

Fair

Columbia County, New York · 0.3 MI S of East Chatham · Structure no. 000000005515290

Built
1958
67 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
451 ft
6 main spans
Daily traffic
309
2020 count
Owner
Toll Authority
State Toll Authority

About this bridge

County Road 9 over 90IX RTE I90 Stony Kil is a steel stringer/multi-beam or girder carrying County Road 9 over 90IX RTE I90 Stony Kil in Columbia County, New York. It was built in 1958, so it is 67 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 309 vehicles a day, roughly 9% of them trucks, projected to reach 433 by 2040. The structure is 451 ft (137.5 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCounty Road 9
Crosses90IX RTE I90 Stony Kil
Location0.3 MI S of East Chatham
RouteCounty Highway 0
CountyColumbia County
StateNew York
Coordinates42.40648, -73.52585
Functional classRural Minor 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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length451 ft (137.5 m)
Longest span84 ft (25.6 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic309 (2020)
Projected traffic433 by 2040
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$9.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 9 over 90IX RTE I90 Stony Kil built?

It was built in 1958, making it 67 years old in 2025.

What condition is County Road 9 over 90IX RTE I90 Stony Kil 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 2023.

How much traffic does County Road 9 over 90IX RTE I90 Stony Kil carry?

About 309 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is County Road 9 over 90IX RTE I90 Stony Kil?

The structure is 451 ft (137.5 m) long with a longest span of 84 ft (25.6 m) and a deck 33 ft wide.

Who owns County Road 9 over 90IX RTE I90 Stony Kil?

It is owned by the State Toll Authority.