US Bridges

Ft Duq to 10 ST over Ramp D & Alleg. River

Poor

Allegheny County, Pennsylvania · Fort Duq South Approach · Structure no. 000000000002820

Built
1968
57 years old, rebuilt 1988
Condition
Poor
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
195 ft
2 main spans
Daily traffic
2,134
2024 count
Owner
State
State Highway Agency

About this bridge

Ft Duq to 10 ST over Ramp D & Alleg. River is a steel stringer/multi-beam or girder carrying Ft Duq to 10 ST over Ramp D & Alleg. River in Allegheny County, Pennsylvania. It was built in 1968 and reconstructed in 1988, so it is 57 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 2,134 vehicles a day, roughly 7% of them trucks, projected to reach 21,097 by 2032. The structure is 195 ft (59.4 m) long and 30 ft wide.

CarriesFt Duq to 10 ST
CrossesRamp D & Alleg. River
LocationFort Duq South Approach
RouteState Highway 0
Coordinates40.43833, -80.01
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length195 ft (59.4 m)
Longest span124 ft (37.8 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck15 ft (4.7 m)

Traffic and service

Average daily traffic2,134 (2024)
Projected traffic21,097 by 2032
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$313,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Ft Duq to 10 ST over Ramp D & Alleg. River built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1988.

What condition is Ft Duq to 10 ST over Ramp D & Alleg. River 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 February 2023.

How much traffic does Ft Duq to 10 ST over Ramp D & Alleg. River carry?

About 2,134 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Ft Duq to 10 ST over Ramp D & Alleg. River?

The structure is 195 ft (59.4 m) long with a longest span of 124 ft (37.8 m) and a deck 30 ft wide.

Who owns Ft Duq to 10 ST over Ramp D & Alleg. River?

It is owned by the State Highway Agency.