US Bridges

Coraopolis Blvd over Montour Run

Fair

Allegheny County, Pennsylvania · Groveton Inter 79 & 51 · Structure no. 000000000000754

Built
1973
52 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
10,961
2024 count
Owner
State
State Highway Agency

About this bridge

Coraopolis Blvd over Montour Run is a concrete culvert carrying Coraopolis Blvd over Montour Run in Allegheny County, Pennsylvania. It was built in 1973, so it is 52 years old, younger 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 10,961 vehicles a day, roughly 5% of them trucks, projected to reach 13,330 by 2032. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCoraopolis Blvd
CrossesMontour Run
LocationGroveton Inter 79 & 51
RouteState Highway 51
CountyAllegheny County
StatePennsylvania
Coordinates40.50364, -80.13629
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,961 (2024)
Projected traffic13,330 by 2032
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$943,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Coraopolis Blvd over Montour Run built?

It was built in 1973, making it 52 years old in 2025.

What condition is Coraopolis Blvd over 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 December 2023.

How much traffic does Coraopolis Blvd over Montour Run carry?

About 10,961 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Coraopolis Blvd over Montour Run?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m).

Who owns Coraopolis Blvd over Montour Run?

It is owned by the State Highway Agency.