Structure 491 · Allegheny County, PA

SR 8 NB over Rt.28 Railroad Local St.

Carries SR 8 NB over Rt.28 Railroad Local St., 62nd Street Bridge.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT772 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 4/9 · sets the rating

772 ft end to end, longest span 88 ft: about 2.1 football fields. 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.

Built1960rebuilt 2008
Length772.0 ft235.3 m
Daily traffic6,859counted 2024
Last inspectedOctober 2022every 24 months

Location

StatePennsylvania
CountyAllegheny
Location62nd Street Bridge
CarriesSR 8 NB
CrossesRt.28 Railroad Local St.
Coordinates40.49587, -79.93984

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length772.0 ft (235.3 m)
Max Span87.9 ft (26.8 m)
Deck Width23.3 ft (7.1 m)
Deck Area1670.6 sq m
Main Spans11
Year Built1960 (reconstructed 2008)

Traffic

Avg Daily Traffic6,859 (2024)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000000491

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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