Structure 23738 · Luzerne County, PA

I-81 NB over Luz Co Rail Authority

Carries I-81 NB over Luz Co Rail Authority, Ashley Bo .5m N Exit 165.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT234 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 6/9

234 ft end to end, longest span 88 ft: about 3 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.

Built1966rebuilt 2022
Length233.9 ft71.3 m
Daily traffic28,742counted 2024
Last inspectedOctober 2023every 24 months

Location

StatePennsylvania
CountyLuzerne
LocationAshley Bo .5m N Exit 165
CarriesI-81 NB
CrossesLuz Co Rail Authority
Coordinates41.21420, -75.88599

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length233.9 ft (71.3 m)
Max Span87.9 ft (26.8 m)
Deck Width37.4 ft (11.4 m)
Deck Area812.8 sq m
Main Spans3
Year Built1966 (reconstructed 2022)

Traffic

Avg Daily Traffic28,742 (2024)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000023738

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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