Structure 1377 · Allegheny County, PA

SR 1002 over SR 9108

Carries SR 1002 over SR 9108, @ Int W/ SR 28 & Freeport.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT155 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

155 ft end to end, longest span 55 ft: about 2 semi-trucks nose to tail. 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 box-beam bridge.

Built1965rebuilt 1995
Length154.9 ft47.2 m
Daily traffic6,881counted 2024
Last inspectedApril 2024every 24 months

Location

StatePennsylvania
CountyAllegheny
Location@ Int W/ SR 28 & Freeport
CarriesSR 1002
CrossesSR 9108
Coordinates40.49047, -79.87175

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length154.9 ft (47.2 m)
Max Span55.1 ft (16.8 m)
Deck Width70.9 ft (21.6 m)
Deck Area1019.5 sq m
Main Spans3
Year Built1965 (reconstructed 1995)

Traffic

Avg Daily Traffic6,881 (2024)
Truck Traffic3%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000001377

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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