US Bridges

Leechburg RD over Little Plum Creek

Fair

Allegheny County, Pennsylvania · 170W.OF Turnpike · Structure no. 000000000001648

Built
1950
75 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
4,369
2024 count
Owner
State
State Highway Agency

About this bridge

Leechburg RD over Little Plum Creek is a concrete culvert carrying Leechburg RD over Little Plum Creek in Allegheny County, Pennsylvania. It was built in 1950, so it is 75 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 4,369 vehicles a day, roughly 6% of them trucks, projected to reach 4,614 by 2032. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLeechburg RD
CrossesLittle Plum Creek
Location170W.OF Turnpike
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.49456, -79.78366
Functional classUrban Minor 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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,369 (2024)
Projected traffic4,614 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$135,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Leechburg RD over Little Plum Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Leechburg RD over Little Plum 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 March 2024.

How much traffic does Leechburg RD over Little Plum Creek carry?

About 4,369 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Leechburg RD over Little Plum Creek?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m).

Who owns Leechburg RD over Little Plum Creek?

It is owned by the State Highway Agency.