Structure 1200 · Allegheny County, PA

I-376 over Sunset Drive

Carries I-376 over Sunset Drive, 1 Mi E Of Rodi RD Inter.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT546 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

546 ft end to end, longest span 156 ft: about 1.5 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a girder bridge.

Built1962rebuilt 2010
Length545.9 ft166.4 m
Daily traffic52,457counted 2023
Last inspectedJuly 2023every 24 months

Location

StatePennsylvania
CountyAllegheny
Location1 Mi E Of Rodi RD Inter
CarriesI-376
CrossesSunset Drive
Coordinates40.44238, -79.81937

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length545.9 ft (166.4 m)
Max Span155.8 ft (47.5 m)
Deck Width100.1 ft (30.5 m)
Deck Area5075.2 sq m
Main Spans3
Year Built1962 (reconstructed 2010)

Traffic

Avg Daily Traffic52,457 (2023)
Truck Traffic7%
Lanes On Bridge6
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000001200

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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