Structure 2066 · Allegheny County, PA

SR 0008 Lr 72 over Pa Tpk (i-76)

Carries SR 0008 Lr 72 over Pa Tpk (i-76), Butler Valley Interchange.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT121 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

121 ft end to end. 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 multi-beam bridge.

Built1952rebuilt 1995
Length121.1 ft36.9 m
Daily traffic27,137counted 2024
Last inspectedApril 2024every 24 months

Location

StatePennsylvania
CountyAllegheny
LocationButler Valley Interchange
CarriesSR 0008 Lr 72
CrossesPa Tpk (i-76)
Coordinates40.60903, -79.94722

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length121.1 ft (36.9 m)
Max Span115.2 ft (35.1 m)
Deck Width73.2 ft (22.3 m)
Deck Area822.9 sq m
Main Spans1
Year Built1952 (reconstructed 1995)

Traffic

Avg Daily Traffic27,137 (2024)
Truck Traffic5%
Lanes On Bridge4
Lanes Under Bridge5

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000002066

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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