US Bridges

Lowries Run Rd. over Lowries Run

Fair

Allegheny County, Pennsylvania · 200W.OF Inter.W/Sr 4011 · Structure no. 000000000001961

Built
1914
111 years old, rebuilt 1958
Condition
Fair
inspected February 2024
Type
Arch - Deck
Concrete
Length
38 ft
1 main span
Daily traffic
12,322
2023 count
Owner
State
State Highway Agency

About this bridge

Lowries Run Rd. over Lowries Run is a concrete arch - deck carrying Lowries Run Rd. over Lowries Run in Allegheny County, Pennsylvania. It was built in 1914 and reconstructed in 1958, so it is 111 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 12,322 vehicles a day, roughly 3% of them trucks, projected to reach 15,938 by 2032. The structure is 38 ft (11.6 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesLowries Run Rd.
CrossesLowries Run
Location200W.OF Inter.W/Sr 4011
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.53429, -80.05323
Functional classUrban Other Principal Arterial

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.
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span35 ft (10.7 m)
Deck width36 ft (11.1 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,322 (2023)
Projected traffic15,938 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$92,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lowries Run Rd. over Lowries Run built?

It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1958.

What condition is Lowries Run Rd. over Lowries 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 February 2024.

How much traffic does Lowries Run Rd. over Lowries Run carry?

About 12,322 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Lowries Run Rd. over Lowries Run?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.7 m) and a deck 36 ft wide.

Who owns Lowries Run Rd. over Lowries Run?

It is owned by the State Highway Agency.