US Bridges

I-376 over Sunset Drive

Fair

Allegheny County, Pennsylvania · 1 MI E of Rodi RD Inter · Structure no. 000000000001200

Built
1962
63 years old, rebuilt 2010
Condition
Fair
inspected July 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
546 ft
3 main spans
Daily traffic
52,457
2023 count
Owner
State
State Highway Agency

About this bridge

I-376 over Sunset Drive is a steel continuous girder and floorbeam system carrying I-376 over Sunset Drive in Allegheny County, Pennsylvania. It was built in 1962 and reconstructed in 2010, so it is 63 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 52,457 vehicles a day, roughly 7% of them trucks, projected to reach 64,685 by 2032. The structure is 546 ft (166.4 m) long and 100 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI-376
CrossesSunset Drive
Location1 MI E of Rodi RD Inter
RouteInterstate 376
CountyAllegheny County
StatePennsylvania
Coordinates40.44238, -79.81937
Functional classUrban Principal Arterial - Interstate

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length546 ft (166.4 m)
Longest span156 ft (47.5 m)
Deck width100 ft (30.5 m)
Roadway width96 ft (29.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,457 (2023)
Projected traffic64,685 by 2032
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$2.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was I-376 over Sunset Drive built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2010.

What condition is I-376 over Sunset Drive 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 2023.

How much traffic does I-376 over Sunset Drive carry?

About 52,457 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I-376 over Sunset Drive?

The structure is 546 ft (166.4 m) long with a longest span of 156 ft (47.5 m) and a deck 100 ft wide.

Who owns I-376 over Sunset Drive?

It is owned by the State Highway Agency.