US Bridges

Coraopolis Blvd over Twp 142 & Montour Run

Fair

Allegheny County, Pennsylvania · Over TWP.RD.142 · Structure no. 000000000000755

Built
1929
96 years old, rebuilt 1982
Condition
Fair
inspected May 2023
Type
Girder and Floorbeam System
Steel
Length
395 ft
1 main span
Daily traffic
13,117
2024 count
Owner
State
State Highway Agency

About this bridge

Coraopolis Blvd over Twp 142 & Montour Run is a steel girder and floorbeam system carrying Coraopolis Blvd over Twp 142 & Montour Run in Allegheny County, Pennsylvania. It was built in 1929 and reconstructed in 1982, so it is 96 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 13,117 vehicles a day, roughly 5% of them trucks, projected to reach 15,113 by 2032. The structure is 395 ft (120.4 m) long and 36 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCoraopolis Blvd
CrossesTwp 142 & Montour Run
LocationOver TWP.RD.142
RouteState Highway 51
Coordinates40.50489, -80.14465
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadHS 20
Structure length395 ft (120.4 m)
Longest span88 ft (26.8 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,117 (2024)
Projected traffic15,113 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed6.8 mi (11 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$218,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Coraopolis Blvd over Twp 142 & Montour Run built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1982.

What condition is Coraopolis Blvd over Twp 142 & Montour 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 May 2023.

How much traffic does Coraopolis Blvd over Twp 142 & Montour Run carry?

About 13,117 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Coraopolis Blvd over Twp 142 & Montour Run?

The structure is 395 ft (120.4 m) long with a longest span of 88 ft (26.8 m) and a deck 36 ft wide.

Who owns Coraopolis Blvd over Twp 142 & Montour Run?

It is owned by the State Highway Agency.