US Bridges

Lysle Bl over Crooked Run

Fair

Allegheny County, Pennsylvania · 500S.OF N.Inter/W SR2037 · Structure no. 000000000000966

Built
1937
88 years old, rebuilt 2011
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
19,749
2024 count
Owner
State
State Highway Agency

About this bridge

Lysle Bl over Crooked Run is a concrete slab carrying Lysle Bl over Crooked Run in Allegheny County, Pennsylvania. It was built in 1937 and reconstructed in 2011, so it is 88 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 19,749 vehicles a day, roughly 3% of them trucks, projected to reach 21,626 by 2032. The structure is 28 ft (8.5 m) long and 57 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesLysle Bl
CrossesCrooked Run
Location500S.OF N.Inter/W SR2037
RouteState Highway 148
CountyAllegheny County
StatePennsylvania
Coordinates40.36106, -79.82828
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating57 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width57 ft (17.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,749 (2024)
Projected traffic21,626 by 2032
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$315,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lysle Bl over Crooked Run built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 2011.

What condition is Lysle Bl over Crooked 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 September 2023.

How much traffic does Lysle Bl over Crooked Run carry?

About 19,749 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Lysle Bl over Crooked Run?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 57 ft wide.

Who owns Lysle Bl over Crooked Run?

It is owned by the State Highway Agency.