US Bridges

T-566 Winters RD over Thorn Creek

Fair

Butler County, Pennsylvania · Btw T497 & T832 · Structure no. 000000000008280

Built
1920
105 years old, rebuilt 1996
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
48 ft
1 main span
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

T-566 Winters RD over Thorn Creek is a steel stringer/multi-beam or girder carrying T-566 Winters RD over Thorn Creek in Butler County, Pennsylvania. It was built in 1920 and reconstructed in 1996, so it is 105 years old, older than the Pennsylvania average of 54.8 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 100 vehicles a day, roughly 9% of them trucks, projected to reach 140 by 2035. The structure is 48 ft (14.6 m) long and 19 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesT-566 Winters RD
CrossesThorn Creek
LocationBtw T497 & T832
RouteCity Street 0
Coordinates40.78846, -79.91621
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating67 US tons
Inventory rating40 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span47 ft (14.3 m)
Deck width19 ft (5.8 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic140 by 2035
Trucks9%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T-566 Winters RD over Thorn Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1996.

What condition is T-566 Winters RD over Thorn 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 July 2023.

How much traffic does T-566 Winters RD over Thorn Creek carry?

About 100 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is T-566 Winters RD over Thorn Creek?

The structure is 48 ft (14.6 m) long with a longest span of 47 ft (14.3 m) and a deck 19 ft wide.

Who owns T-566 Winters RD over Thorn Creek?

It is owned by the County Highway Agency.