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HomePennsylvaniaBlair County › I-99 / US 220 Nbl over Norfolk Beaverdam

I-99 / US 220 Nbl over Norfolk Beaverdam Br Jun

Blair County, Pennsylvania · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

View this bridge on a map → (40.4433, -78.42469)

Component ratings

ComponentRating (2025)FHWA scale meaning
Deck7Good condition
Superstructure6Satisfactory condition
Substructure5Fair condition

Bridge details

StructurePrestressed concrete stringer or multi-beam girder
Lengthabout 348 ft
Location1 Mi W of Hollidaysburg
NBI structure number000000000005593
Condition classFair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Pennsylvania department of transportation.

Busiest bridges in Blair County

BridgeBuiltVehicles/dayCondition
SR 4010 (17TH St) over Brush Run198525,718Good
SR 4010 (17TH St) over I-99 / US 220199225,718Good
SR 4010 over SR 4009_NORFOLK So. RR197319,273Fair
Pa 36/ Pa 164 over Everett Railroad195118,566Fair
Pa 36 over Halter Creek199717,622Fair
Pa 36/ Pa 164 over Halter Creek195117,622Fair

All bridges nearby: Blair County, PA bridge conditions · every bridge in Blair County · Pennsylvania bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.