US Bridges

Ramp a over Adj. West Carson Street

Poor

Allegheny County, Pennsylvania · Fort Pitt Bridge · Structure no. 000000000002813

Built
1959
66 years old, rebuilt 1997
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
935 ft
10 main spans
Daily traffic
5,353
2024 count
Owner
State
State Highway Agency

About this bridge

Ramp a over Adj. West Carson Street is a steel stringer/multi-beam or girder carrying Ramp a over Adj. West Carson Street in Allegheny County, Pennsylvania. It was built in 1959 and reconstructed in 1997, so it is 66 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,353 vehicles a day, roughly 7% of them trucks, projected to reach 15,288 by 2032. The structure is 935 ft (285 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRamp a
CrossesAdj. West Carson Street
LocationFort Pitt Bridge
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.43871, -80.01482
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length935 ft (285 m)
Longest span169 ft (51.5 m)
Deck width33 ft (10.1 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deck15 ft (4.4 m)

Traffic and service

Average daily traffic5,353 (2024)
Projected traffic15,288 by 2032
Trucks7%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
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$4.6 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Ramp a over Adj. West Carson Street built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1997.

What condition is Ramp a over Adj. West Carson Street in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Ramp a over Adj. West Carson Street carry?

About 5,353 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Ramp a over Adj. West Carson Street?

The structure is 935 ft (285 m) long with a longest span of 169 ft (51.5 m) and a deck 33 ft wide.

Who owns Ramp a over Adj. West Carson Street?

It is owned by the State Highway Agency.