US Bridges

Pa Ptk (I-576) WB over T-439 Bald Knob Road

Good

Allegheny County, Pennsylvania · Findlay Twp · Structure no. 000000000045355

Built
2006
19 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
150 ft
1 main span
Daily traffic
2,025
2008 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Ptk (I-576) WB over T-439 Bald Knob Road is a steel stringer/multi-beam or girder carrying Pa Ptk (I-576) WB over T-439 Bald Knob Road in Allegheny County, Pennsylvania. It was built in 2006, so it is 19 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,025 vehicles a day, roughly 8% of them trucks, projected to reach 7,300 by 2030. The structure is 150 ft (45.7 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPa Ptk (I-576) WB
CrossesT-439 Bald Knob Road
LocationFindlay Twp
CountyAllegheny County
StatePennsylvania
Coordinates40.44838, -80.3081
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span144 ft (43.9 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,025 (2008)
Projected traffic7,300 by 2030
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Ptk (I-576) WB over T-439 Bald Knob Road built?

It was built in 2006, making it 19 years old in 2025.

What condition is Pa Ptk (I-576) WB over T-439 Bald Knob Road in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Pa Ptk (I-576) WB over T-439 Bald Knob Road carry?

About 2,025 vehicles per day (2008 count), of which roughly 8% are trucks.

How long is Pa Ptk (I-576) WB over T-439 Bald Knob Road?

The structure is 150 ft (45.7 m) long with a longest span of 144 ft (43.9 m) and a deck 45 ft wide.

Who owns Pa Ptk (I-576) WB over T-439 Bald Knob Road?

It is owned by the State Toll Authority.