US Bridges

Pa Tpk (I-76) over Mt. Pleasant Road

Good

Allegheny County, Pennsylvania · West of Warrendale Toll · Structure no. 000000000068594

Built
2021
4 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
82 ft
1 main span
Daily traffic
34,106
2018 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over Mt. Pleasant Road is a prestressed concrete stringer/multi-beam or girder carrying Pa Tpk (I-76) over Mt. Pleasant Road in Allegheny County, Pennsylvania. It was built in 2021, so it is 4 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 34,106 vehicles a day, roughly 22% of them trucks, projected to reach 41,000 by 2038. The structure is 82 ft (25 m) long and 126 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesMt. Pleasant Road
LocationWest of Warrendale Toll
RouteInterstate 76
CountyAllegheny County
StatePennsylvania
Coordinates40.65604, -80.07794
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length82 ft (25 m)
Longest span80 ft (24.4 m)
Deck width126 ft (38.4 m)
Roadway width119 ft (36.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,106 (2018)
Projected traffic41,000 by 2038
Trucks22%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed21.7 mi (35 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-76) over Mt. Pleasant Road built?

It was built in 2021, making it 4 years old in 2025.

What condition is Pa Tpk (I-76) over Mt. Pleasant 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 October 2023.

How much traffic does Pa Tpk (I-76) over Mt. Pleasant Road carry?

About 34,106 vehicles per day (2018 count), of which roughly 22% are trucks.

How long is Pa Tpk (I-76) over Mt. Pleasant Road?

The structure is 82 ft (25 m) long with a longest span of 80 ft (24.4 m) and a deck 126 ft wide.

Who owns Pa Tpk (I-76) over Mt. Pleasant Road?

It is owned by the State Toll Authority.