US Bridges

RTE 20A over Stony Brook

Fair

Wyoming County, New York · 2.5MI W JCT Rts 20A + 238 · Structure no. 000000001016150

Built
1958
67 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
4,128
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 20A over Stony Brook is a concrete culvert carrying RTE 20A over Stony Brook in Wyoming 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 4,128 vehicles a day, roughly 7% of them trucks, projected to reach 4,153 by 2041. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesRTE 20A
CrossesStony Brook
Location2.5MI W JCT Rts 20A + 238
RouteState Highway 20A
CountyWyoming County
StateNew York
Coordinates42.74911, -78.24289
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.7 US tons
Inventory rating33.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span26 ft (7.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,128 (2019)
Projected traffic4,153 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$400,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 20A over Stony Brook built?

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

What condition is RTE 20A over Stony 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 August 2024.

How much traffic does RTE 20A over Stony Brook carry?

About 4,128 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is RTE 20A over Stony Brook?

The structure is 30 ft (9.1 m) long with a longest span of 26 ft (7.9 m).

Who owns RTE 20A over Stony Brook?

It is owned by the State Highway Agency.