US Bridges

Parkway West over Mcmichael Road

Fair

Allegheny County, Pennsylvania · At Int W/ Mcmichael Road · Structure no. 000000000000557

Built
1951
74 years old, rebuilt 1981
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
107 ft
3 main spans
Daily traffic
77,308
2024 count
Owner
State
State Highway Agency

About this bridge

Parkway West over Mcmichael Road is a steel continuous stringer/multi-beam or girder carrying Parkway West over Mcmichael Road in Allegheny County, Pennsylvania. It was built in 1951 and reconstructed in 1981, so it is 74 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 77,308 vehicles a day, roughly 6% of them trucks, projected to reach 67,853 by 2032. The structure is 107 ft (32.6 m) long and 94 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesParkway West
CrossesMcmichael Road
LocationAt Int W/ Mcmichael Road
RouteInterstate 376
Coordinates40.43015, -80.13523
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length107 ft (32.6 m)
Longest span49 ft (14.9 m)
Deck width94 ft (28.8 m)
Roadway width91 ft (27.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77,308 (2024)
Projected traffic67,853 by 2032
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$975,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Parkway West over Mcmichael Road built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1981.

What condition is Parkway West over Mcmichael Road 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 July 2023.

How much traffic does Parkway West over Mcmichael Road carry?

About 77,308 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Parkway West over Mcmichael Road?

The structure is 107 ft (32.6 m) long with a longest span of 49 ft (14.9 m) and a deck 94 ft wide.

Who owns Parkway West over Mcmichael Road?

It is owned by the State Highway Agency.