Structure 44412 · Westmoreland County, PA

SR 3111 over I-76 Trib Sewickley Crk

Carries SR 3111 over I-76 Trib Sewickley Crk, New Stanton.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT359 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

359 ft end to end, longest span 177 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.

Built200818 years old
Length358.9 ft109.4 m
Daily traffic10,431counted 2024
Last inspectedMay 2022every 48 months

Location

StatePennsylvania
CountyWestmoreland
LocationNew Stanton
CarriesSR 3111
CrossesI-76 Trib Sewickley Crk
Coordinates40.22583, -79.60936

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length358.9 ft (109.4 m)
Max Span176.8 ft (53.9 m)
Deck Width44.6 ft (13.6 m)
Deck Area1487.8 sq m
Main Spans2
Year Built2008

Traffic

Avg Daily Traffic10,431 (2024)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000044412

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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