Structure 57205 · Allegheny County, PA

Hickory Grade RD over SR 576(southern Beltway)

Carries Hickory Grade RD over SR 576(southern Beltway), Mp 17.97 On Rt. 576.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT347 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 6/9 · sets the rating

347 ft end to end, longest span 194 ft: about 5 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 multi-beam bridge.

Built20197 years old
Length347.1 ft105.8 m
Daily traffic250counted 2019
Last inspectedApril 2023every 24 months

Location

StatePennsylvania
CountyAllegheny
LocationMp 17.97 On Rt. 576
CarriesHickory Grade RD
CrossesSR 576(southern Beltway)
Coordinates40.33136, -80.16842

Physical Characteristics

MaterialOther
DesignStringer/Multi-beam
Total Length347.1 ft (105.8 m)
Max Span193.9 ft (59.1 m)
Deck Width39.4 ft (12 m)
Deck Area1269.6 sq m
Main Spans2
Year Built2019

Traffic

Avg Daily Traffic250 (2019)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000057205

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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