US Bridges

Old Frankstown RD over Piersons Run

Fair

Allegheny County, Pennsylvania · 350 NW Pierson Run Rd. · Structure no. 000000000001608

Built
1959
66 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
5,385
2024 count
Owner
State
State Highway Agency

About this bridge

Old Frankstown RD over Piersons Run is a concrete slab carrying Old Frankstown RD over Piersons Run in Allegheny County, Pennsylvania. It was built in 1959, so it is 66 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 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 5,385 vehicles a day, roughly 2% of them trucks, projected to reach 6,241 by 2032. The structure is 26 ft (7.9 m) long and 38 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesOld Frankstown RD
CrossesPiersons Run
Location350 NW Pierson Run Rd.
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.45497, -79.73466
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span22 ft (6.7 m)
Deck width38 ft (11.7 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,385 (2024)
Projected traffic6,241 by 2032
Trucks2%
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

OwnerState Highway Agency
Maintained byState 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 Old Frankstown RD over Piersons Run built?

It was built in 1959, making it 66 years old in 2025.

What condition is Old Frankstown RD over Piersons Run 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 December 2023.

How much traffic does Old Frankstown RD over Piersons Run carry?

About 5,385 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Old Frankstown RD over Piersons Run?

The structure is 26 ft (7.9 m) long with a longest span of 22 ft (6.7 m) and a deck 38 ft wide.

Who owns Old Frankstown RD over Piersons Run?

It is owned by the State Highway Agency.