Structure 36843 · Westmoreland County, PA

T-549 Thermo Vill over Pa Tpk (i-76)

Carries T-549 Thermo Vill over Pa Tpk (i-76), East Of New Stanton.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT158 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

158 ft end to end, longest span 150 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 multi-beam bridge.

Built199729 years old
Length158.1 ft48.2 m
Daily traffic200counted 1992
Last inspectedJune 2022every 48 months

Location

StatePennsylvania
CountyWestmoreland
LocationEast Of New Stanton
CarriesT-549 Thermo Vill
CrossesPa Tpk (i-76)
Coordinates40.21333, -79.59167

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length158.1 ft (48.2 m)
Max Span149.9 ft (45.7 m)
Deck Width33.5 ft (10.2 m)
Deck Area491.6 sq m
Main Spans2
Year Built1997

Traffic

Avg Daily Traffic200 (1992)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2022
Inspection FrequencyEvery 48 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000036843

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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