Structure 9006 · Carbon County, PA

Pa 248 (lr163) over Norfolk&southern Rr

Carries Pa 248 (lr163) over Norfolk&southern Rr, Bowmanstown Boro Line.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT366 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

366 ft end to end, longest span 147 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.

Built1962rebuilt 1979
Length366.1 ft111.6 m
Daily traffic18,532counted 2023
Last inspectedSeptember 2024every 24 months

Location

StatePennsylvania
CountyCarbon
LocationBowmanstown Boro Line
CarriesPa 248 (lr163)
CrossesNorfolk&southern Rr
Coordinates40.80576, -75.66956

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length366.1 ft (111.6 m)
Max Span147.0 ft (44.8 m)
Deck Width65.6 ft (20 m)
Deck Area2,232 sq m
Main Spans3
Year Built1962 (reconstructed 1979)

Traffic

Avg Daily Traffic18,532 (2023)
Truck Traffic6%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000009006

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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