US Bridges

T-570 Old RTE 422 over Little Buffalo Run

Poor

Butler County, Pennsylvania · 0.9 MI E of S.R. 1015 · Structure no. 000000000039985

Built
1938
87 years old, rebuilt 1960
Condition
Poor
inspected December 2023
Type
Tee Beam
Concrete
Length
26 ft
1 main span
Daily traffic
50
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-570 Old RTE 422 over Little Buffalo Run is a concrete tee beam carrying T-570 Old RTE 422 over Little Buffalo Run in Butler County, Pennsylvania. It was built in 1938 and reconstructed in 1960, so it is 87 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 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.

It carries about 50 vehicles a day, roughly 9% of them trucks, projected to reach 70 by 2036. The structure is 26 ft (7.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesT-570 Old RTE 422
CrossesLittle Buffalo Run
Location0.9 MI E of S.R. 1015
RouteCity Street 0
Coordinates40.85669, -79.76024
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.
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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2016)
Projected traffic70 by 2036
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T-570 Old RTE 422 over Little Buffalo Run built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1960.

What condition is T-570 Old RTE 422 over Little Buffalo Run 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 December 2023.

How much traffic does T-570 Old RTE 422 over Little Buffalo Run carry?

About 50 vehicles per day (2016 count), of which roughly 9% are trucks.

How long is T-570 Old RTE 422 over Little Buffalo Run?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 43 ft wide.

Who owns T-570 Old RTE 422 over Little Buffalo Run?

It is owned by the Town or Township Highway Agency.