US Bridges

RTE 20 over Canadaway Creek

Fair

Chautauqua County, New York · 1.6 MI SW JCT Rts 20 + 60 · Structure no. 000000001015400

Built
1936
89 years old, rebuilt 1994
Condition
Fair
inspected April 2023
Type
Girder and Floorbeam System
Steel
Length
69 ft
1 main span
Daily traffic
4,577
2018 count
Owner
State
State Highway Agency

About this bridge

RTE 20 over Canadaway Creek is a steel girder and floorbeam system carrying RTE 20 over Canadaway Creek in Chautauqua County, New York. It was built in 1936 and reconstructed in 1994, so it is 89 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 4,577 vehicles a day, roughly 7% of them trucks, projected to reach 4,598 by 2041. The structure is 69 ft (21 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRTE 20
CrossesCanadaway Creek
Location1.6 MI SW JCT Rts 20 + 60
RouteU.S. Route 20
CountyChautauqua County
StateNew York
Coordinates42.43774, -79.33369
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating31 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length69 ft (21 m)
Longest span67 ft (20.4 m)
Deck width58 ft (17.7 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,577 (2018)
Projected traffic4,598 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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$4.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 20 over Canadaway Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1994.

What condition is RTE 20 over Canadaway Creek 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 20 over Canadaway Creek carry?

About 4,577 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is RTE 20 over Canadaway Creek?

The structure is 69 ft (21 m) long with a longest span of 67 ft (20.4 m) and a deck 58 ft wide.

Who owns RTE 20 over Canadaway Creek?

It is owned by the State Highway Agency.