US Bridges

Ramp G RD over 7th Ave. over I-579

Fair

Allegheny County, Pennsylvania · Near US Steel Bldg · Structure no. 000000000001219

Built
1962
63 years old, rebuilt 2013
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
280 ft
3 main spans
Daily traffic
11,754
2024 count
Owner
State
State Highway Agency

About this bridge

Ramp G RD over 7th Ave. over I-579 is a steel stringer/multi-beam or girder carrying Ramp G RD over 7th Ave. over I-579 in Allegheny County, Pennsylvania. It was built in 1962 and reconstructed in 2013, so it is 63 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 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 11,754 vehicles a day, roughly 3% of them trucks, projected to reach 13,090 by 2032. The structure is 280 ft (85.3 m) long and 51 ft wide.

Location

Open in Google Maps
CarriesRamp G RD
Crosses7th Ave. over I-579
LocationNear US Steel Bldg
RouteState Highway 380
CountyAllegheny County
StatePennsylvania
Coordinates40.44142, -79.99269
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length280 ft (85.3 m)
Longest span104 ft (31.7 m)
Deck width51 ft (15.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,754 (2024)
Projected traffic13,090 by 2032
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp G RD over 7th Ave. over I-579 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2013.

What condition is Ramp G RD over 7th Ave. over I-579 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 2024.

How much traffic does Ramp G RD over 7th Ave. over I-579 carry?

About 11,754 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Ramp G RD over 7th Ave. over I-579?

The structure is 280 ft (85.3 m) long with a longest span of 104 ft (31.7 m) and a deck 51 ft wide.

Who owns Ramp G RD over 7th Ave. over I-579?

It is owned by the State Highway Agency.