US Bridges

Mckeesport-Duq Brg over 736 Ext 3 Rrs Mon.Riv.

Fair

Allegheny County, Pennsylvania · Duquesne-Mckeesport Brg · Structure no. 000000000001668

Built
1927
98 years old, rebuilt 1988
Condition
Fair
inspected July 2024
Type
Truss - Thru
Steel
Length
2,252 ft
8 main spans
Daily traffic
26,495
2024 count
Owner
State
State Highway Agency

About this bridge

Mckeesport-Duq Brg over 736 Ext 3 Rrs Mon.Riv. is a steel truss - thru carrying Mckeesport-Duq Brg over 736 Ext 3 Rrs Mon.Riv. in Allegheny County, Pennsylvania. It was built in 1927 and reconstructed in 1988, so it is 98 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 26,495 vehicles a day, roughly 4% of them trucks, projected to reach 30,020 by 2032. The structure is 2,252 ft (686.4 m) long and 42 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMckeesport-Duq Brg
Crosses736 Ext 3 Rrs Mon.Riv.
LocationDuquesne-Mckeesport Brg
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.35751, -79.84396
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating53 US tons
Inventory rating4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans8 (+1 approach)
Design loadHS 20
Structure length2,252 ft (686.4 m)
Longest span382 ft (116.4 m)
Deck width42 ft (12.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic26,495 (2024)
Projected traffic30,020 by 2032
Trucks4%
Lanes on structure2
Traffic directionTwo-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 statusEligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$1.8 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Mckeesport-Duq Brg over 736 Ext 3 Rrs Mon.Riv. built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1988.

What condition is Mckeesport-Duq Brg over 736 Ext 3 Rrs Mon.Riv. 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 Mckeesport-Duq Brg over 736 Ext 3 Rrs Mon.Riv. carry?

About 26,495 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Mckeesport-Duq Brg over 736 Ext 3 Rrs Mon.Riv.?

The structure is 2,252 ft (686.4 m) long with a longest span of 382 ft (116.4 m) and a deck 42 ft wide.

Who owns Mckeesport-Duq Brg over 736 Ext 3 Rrs Mon.Riv.?

It is owned by the State Highway Agency.