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T-520 over SR 15

Snyder County, Pennsylvania · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

T-520 over SR 15 in Snyder County, Pennsylvania, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 8 (very good condition) on the 0-9 scale.
It was built in 2021, making it 4 years old at the 2025 inventory.
It carries about 65 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 79 of the 163 inventoried bridges in Snyder County rated good (48.5%); 9 (5.5%) are rated poor.
Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
It does not appear under this structure number in the 2024 inventory (a new or renumbered structure).
Its most recent inspection on record is dated October 2023, on a 24-month routine inspection cycle.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous concrete stringer or multi-beam girder
Length	about 273 ft
Location	CSVT over Sunbury Road
NBI structure number	000000000068135
Condition class	Good
Traffic status (item 41)	Open, no restriction
Last inspection (item 90)	October 2023
Inspection interval (item 91)	24 months
Scour (item 113)	N: not over a waterway

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

Bridge	Built	Vehicles/day	Condition
US Rt. 15 & 11 over Carrie Run	1962	27,854	Fair
SR 522 over Penns Creek	1943	19,255	Fair
SR 15 NB & SB over Trib.to Susquehanna Rive	1930	17,781	Good
SR 15 over Trib.to Susquehanna Rive	1930	17,781	Fair
SR 11 over Silver Creek	1992	15,037	Good
Tr 11 Nb/sb over over Mahantango Creek	2001	14,781	Good