Structure 9171 · Carbon County, PA

Pa Tpk (i-476) over SR 0940 Lr408

Carries Pa Tpk (i-476) over SR 0940 Lr408, Near Pocono Interchange.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
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 FT144 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

144 ft end to end, longest span 51 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.

Built1955rebuilt 1989
Length144.0 ft43.9 m
Daily traffic23,657counted 2011
Last inspectedAugust 2023every 24 months

Location

StatePennsylvania
CountyCarbon
LocationNear Pocono Interchange
CarriesPa Tpk (i-476)
CrossesSR 0940 Lr408
Coordinates41.07173, -75.70014

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length144.0 ft (43.9 m)
Max Span50.9 ft (15.5 m)
Deck Width64.6 ft (19.7 m)
Deck Area864.8 sq m
Main Spans3
Year Built1955 (reconstructed 1989)

Traffic

Avg Daily Traffic23,657 (2011)
Truck Traffic20%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000009171

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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