US Bridges

RTE 417 over Duffy Hollow Crk

Fair

Allegany County, New York · 1.2 MI SW of Elm Valley · Structure no. 000000001012500

Built
1948
77 years old, rebuilt 1964
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
4,619
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 417 over Duffy Hollow Crk is a steel stringer/multi-beam or girder carrying RTE 417 over Duffy Hollow Crk in Allegany County, New York. It was built in 1948 and reconstructed in 1964, so it is 77 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 4,619 vehicles a day, roughly 8% of them trucks, projected to reach 4,905 by 2041. The structure is 32 ft (9.8 m) long and 38 ft wide. If it were closed, the detour would be 88.9 mi (143 km).

Location

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CarriesRTE 417
CrossesDuffy Hollow Crk
Location1.2 MI SW of Elm Valley
RouteState Highway 417
CountyAllegany County
StateNew York
Coordinates42.14655, -77.87947
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width38 ft (11.7 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,619 (2021)
Projected traffic4,905 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed88.9 mi (143 km)
TollOn a free road
National Highway SystemNo

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$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 417 over Duffy Hollow Crk built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1964.

What condition is RTE 417 over Duffy Hollow Crk 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 April 2023.

How much traffic does RTE 417 over Duffy Hollow Crk carry?

About 4,619 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is RTE 417 over Duffy Hollow Crk?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 38 ft wide.

Who owns RTE 417 over Duffy Hollow Crk?

It is owned by the State Highway Agency.