Structure 41392 · Northumberland County, PA

I-80 Westbound over I-180 And Ramps

Carries I-80 Westbound over I-180 And Ramps, 2 Mi. N Of Milton.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT236 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

236 ft end to end, longest span 110 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.

Built200125 years old
Length235.9 ft71.9 m
Daily traffic13,905counted 2024
Last inspectedNovember 2023every 24 months

Location

StatePennsylvania
CountyNorthumberland
Location2 Mi. N Of Milton
CarriesI-80 Westbound
CrossesI-180 And Ramps
Coordinates41.05006, -76.84032

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length235.9 ft (71.9 m)
Max Span109.9 ft (33.5 m)
Deck Width67.9 ft (20.7 m)
Deck Area1488.3 sq m
Main Spans2
Year Built2001

Traffic

Avg Daily Traffic13,905 (2024)
Truck Traffic37%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000041392

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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