US Bridges

Klondyke Road over Tb Twentymile Crk

PoorPosted for load

Chautauqua County, New York · .9 MI SW of Sheldon Crnrs · Structure no. 000000002212620

Built
1900
125 years old
Condition
Poor
inspected April 2024
Type
Girder and Floorbeam System
Aluminum, Wrought Iron, or Cast Iron
Length
30 ft
1 main span
Daily traffic
4
2018 count
Owner
County
County Highway Agency

About this bridge

Klondyke Road over Tb Twentymile Crk is a aluminum, wrought iron, or cast iron girder and floorbeam system carrying Klondyke Road over Tb Twentymile Crk in Chautauqua County, New York. It was built in 1900, so it is 125 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 4 vehicles a day, roughly 6% of them trucks, projected to reach 6 by 2038. The structure is 30 ft (9.1 m) long and 17 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesKlondyke Road
CrossesTb Twentymile Crk
Location.9 MI SW of Sheldon Crnrs
Coordinates42.17349, -79.66824
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28 US tons
Inventory rating16 US tons

Structure

MaterialAluminum, Wrought Iron, or Cast Iron
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4 (2018)
Projected traffic6 by 2038
Trucks6%
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$399,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Klondyke Road over Tb Twentymile Crk built?

It was built in 1900, making it 125 years old in 2025.

What condition is Klondyke Road over Tb Twentymile Crk in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Klondyke Road over Tb Twentymile Crk carry?

About 4 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Klondyke Road over Tb Twentymile Crk?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 17 ft wide.

Who owns Klondyke Road over Tb Twentymile Crk?

It is owned by the County Highway Agency.