US Bridges

RTE 20 over Tonawanda Creek

Good

Genesee County, New York · JCT RTE 20 + Tonawanda Ck · Structure no. 000000001015630

Built
2015
10 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
119 ft
1 main span
Daily traffic
3,146
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 20 over Tonawanda Creek is a steel stringer/multi-beam or girder carrying RTE 20 over Tonawanda Creek in Genesee County, New York. It was built in 2015, so it is 10 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,146 vehicles a day, roughly 28% of them trucks, projected to reach 3,175 by 2041. The structure is 119 ft (36.3 m) long and 43 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

Location

Open in Google Maps
CarriesRTE 20
CrossesTonawanda Creek
LocationJCT RTE 20 + Tonawanda Ck
RouteU.S. Route 20
CountyGenesee County
StateNew York
Coordinates42.90392, -78.2497
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating78 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length119 ft (36.3 m)
Longest span117 ft (35.7 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,146 (2020)
Projected traffic3,175 by 2041
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed15.5 mi (25 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$2.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 20 over Tonawanda Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is RTE 20 over Tonawanda Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does RTE 20 over Tonawanda Creek carry?

About 3,146 vehicles per day (2020 count), of which roughly 28% are trucks.

How long is RTE 20 over Tonawanda Creek?

The structure is 119 ft (36.3 m) long with a longest span of 117 ft (35.7 m) and a deck 43 ft wide.

Who owns RTE 20 over Tonawanda Creek?

It is owned by the State Highway Agency.