Structure 47696 · Westmoreland County, PA

T-554 Greenhills over Little Sewickley Creek

Carries T-554 Greenhills over Little Sewickley Creek, At Int W/t561.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT69 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

69 ft end to end, longest span 21 ft. Lengths and the car 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 rigid-frame bridge.

Built200620 years old
Length68.9 ft21 m
Daily traffic500counted 2022
Last inspectedNovember 2022every 24 months

Location

StatePennsylvania
CountyWestmoreland
LocationAt Int W/t561
CarriesT-554 Greenhills
CrossesLittle Sewickley Creek
Coordinates40.26398, -79.72057

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length68.9 ft (21 m)
Max Span21.0 ft (6.4 m)
Deck Width32.2 ft (9.8 m)
Deck Area205.8 sq m
Main Spans3
Year Built2006

Traffic

Avg Daily Traffic500 (2022)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000047696

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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