US Bridges

Ramp a over Ramp C SB

Fair

Allegheny County, Pennsylvania · 28 N.B. Rp. to High.Pk.Br · Structure no. 000000000002848

Built
1960
65 years old, rebuilt 2022
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
822 ft
12 main spans
Daily traffic
6,461
2024 count
Owner
State
State Highway Agency

About this bridge

Ramp a over Ramp C SB is a steel stringer/multi-beam or girder carrying Ramp a over Ramp C SB in Allegheny County, Pennsylvania. It was built in 1960 and reconstructed in 2022, so it is 65 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 6,461 vehicles a day, roughly 5% of them trucks, projected to reach 13,642 by 2032. The structure is 822 ft (250.5 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRamp a
CrossesRamp C SB
Location28 N.B. Rp. to High.Pk.Br
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.49506, -79.90943
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length822 ft (250.5 m)
Longest span77 ft (23.5 m)
Deck width34 ft (10.5 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deck17 ft (5.3 m)

Traffic and service

Average daily traffic6,461 (2024)
Projected traffic13,642 by 2032
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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$561,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp a over Ramp C SB built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2022.

What condition is Ramp a over Ramp C SB 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 2024.

How much traffic does Ramp a over Ramp C SB carry?

About 6,461 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Ramp a over Ramp C SB?

The structure is 822 ft (250.5 m) long with a longest span of 77 ft (23.5 m) and a deck 34 ft wide.

Who owns Ramp a over Ramp C SB?

It is owned by the State Highway Agency.