US Bridges

West End Circle over W. Carson St. SR 3106

Fair

Allegheny County, Pennsylvania · @ South End / West End Br · Structure no. 000000000001294

Built
1991
34 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
604 ft
6 main spans
Daily traffic
15,276
2024 count
Owner
State
State Highway Agency

About this bridge

West End Circle over W. Carson St. SR 3106 is a steel continuous stringer/multi-beam or girder carrying West End Circle over W. Carson St. SR 3106 in Allegheny County, Pennsylvania. It was built in 1991, so it is 34 years old, younger 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 15,276 vehicles a day, roughly 7% of them trucks, projected to reach 23,822 by 2032. The structure is 604 ft (184.1 m) long and 76 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesWest End Circle
CrossesW. Carson St. SR 3106
Location@ South End / West End Br
RouteState Highway 837
CountyAllegheny County
StatePennsylvania
Coordinates40.44406, -80.02798
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating66 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6 (+22 approach)
Design loadHS 20
Structure length604 ft (184.1 m)
Longest span28 ft (8.5 m)
Deck width76 ft (23.3 m)
Roadway width66 ft (20 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic15,276 (2024)
Projected traffic23,822 by 2032
Trucks7%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was West End Circle over W. Carson St. SR 3106 built?

It was built in 1991, making it 34 years old in 2025.

What condition is West End Circle over W. Carson St. SR 3106 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 March 2024.

How much traffic does West End Circle over W. Carson St. SR 3106 carry?

About 15,276 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is West End Circle over W. Carson St. SR 3106?

The structure is 604 ft (184.1 m) long with a longest span of 28 ft (8.5 m) and a deck 76 ft wide.

Who owns West End Circle over W. Carson St. SR 3106?

It is owned by the State Highway Agency.