Structure 5599 · Blair County, PA

I-99 / US 220 Nbl over Pa 36

Carries I-99 / US 220 Nbl over Pa 36, Village Of Lakemont.

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 FT212 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

212 ft end to end: 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.

Built1985rebuilt 2009
Length211.9 ft64.6 m
Daily traffic17,022counted 2024
Last inspectedJuly 2024every 24 months

Location

StatePennsylvania
CountyBlair
LocationVillage Of Lakemont
CarriesI-99 / US 220 Nbl
CrossesPa 36
Coordinates40.47024, -78.39911

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length211.9 ft (64.6 m)
Max Span119.1 ft (36.3 m)
Deck Width47.6 ft (14.5 m)
Deck Area936.7 sq m
Main Spans1
Year Built1985 (reconstructed 2009)

Traffic

Avg Daily Traffic17,022 (2024)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000005599

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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