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Petro Road over North Fork of Salt Creek

Brown County, Indiana · rated Fair in the 2025 National Bridge Inventory

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

Petro Road over North Fork of Salt Creek in Brown County, Indiana, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1934 and reconstructed in 2012, making it 91 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 71 of the 114 inventoried bridges in Brown County rated fair (62.3%); 17 (14.9%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 30 ft
Location	0.1 Mi E of UP Salt CR Rd
NBI structure number	0700050
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
SR 46 over Greasy Creek	1964	14,040	Fair
SR 46 over North Fork Salt Creek	1964	11,699	Fair
SR 46 over North Fork Salt Creek	1964	10,596	Fair
SR 46 over North Fork Salt Creek	1964	10,520	Fair
SR 46 over N Fork Salt Creek	1928	9,341	Fair
SR 46 over Gnaw Bone Creek	1960	8,485	Good