US Bridges

Seventh Ave over Bull Creek

Fair

Allegheny County, Pennsylvania · At Apprch to Tarentum Br · Structure no. 000000000001374

Built
1895
130 years old
Condition
Fair
inspected March 2024
Type
Arch - Deck
Masonry
Length
40 ft
1 main span
Daily traffic
9,826
2024 count
Owner
State
State Highway Agency

About this bridge

Seventh Ave over Bull Creek is a masonry arch - deck carrying Seventh Ave over Bull Creek in Allegheny County, Pennsylvania. It was built in 1895, so it is 130 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 9,826 vehicles a day, roughly 8% of them trucks, projected to reach 13,091 by 2032. The structure is 40 ft (12.2 m) long and 53 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSeventh Ave
CrossesBull Creek
LocationAt Apprch to Tarentum Br
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.60168, -79.75808
Functional classUrban Minor 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
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width53 ft (16.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,826 (2024)
Projected traffic13,091 by 2032
Trucks8%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

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$180,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Seventh Ave over Bull Creek built?

It was built in 1895, making it 130 years old in 2025.

What condition is Seventh Ave over Bull Creek 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 March 2024.

How much traffic does Seventh Ave over Bull Creek carry?

About 9,826 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Seventh Ave over Bull Creek?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 53 ft wide.

Who owns Seventh Ave over Bull Creek?

It is owned by the State Highway Agency.