US Bridges

T-534 Chambers RD over S Br Slippery Rock CR

Fair

Butler County, Pennsylvania · Btw SR 4010 & T428 · Structure no. 000000000008181

Built
1917
108 years old
Condition
Fair
inspected September 2023
Type
Other
Concrete
Length
43 ft
1 main span
Daily traffic
50
2015 count
Owner
County
County Highway Agency

About this bridge

T-534 Chambers RD over S Br Slippery Rock CR is a concrete other carrying T-534 Chambers RD over S Br Slippery Rock CR in Butler County, Pennsylvania. It was built in 1917, so it is 108 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 50 vehicles a day, roughly 9% of them trucks, projected to reach 75 by 2035. The structure is 43 ft (13.1 m) long and 18 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesT-534 Chambers RD
CrossesS Br Slippery Rock CR
LocationBtw SR 4010 & T428
RouteCity Street 0
CountyButler County
StatePennsylvania
Coordinates41.06572, -79.93836
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeOther
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width18 ft (5.4 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2015)
Projected traffic75 by 2035
Trucks9%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$353,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-534 Chambers RD over S Br Slippery Rock CR built?

It was built in 1917, making it 108 years old in 2025.

What condition is T-534 Chambers RD over S Br Slippery Rock CR 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 September 2023.

How much traffic does T-534 Chambers RD over S Br Slippery Rock CR carry?

About 50 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is T-534 Chambers RD over S Br Slippery Rock CR?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 18 ft wide.

Who owns T-534 Chambers RD over S Br Slippery Rock CR?

It is owned by the County Highway Agency.