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SR-29 over St. Marys River

Auglaize County, Ohio · rated Good in the 2025 National Bridge Inventory

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

SR-29 over St. Marys River in Auglaize County, Ohio, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
It was built in 1926 and reconstructed in 1993, making it 99 years old at the 2025 inventory.
It carries about 5,474 vehicles a day (traffic count year 2015).
Its listed owner is the state highway agency.
It is one of 266 of the 321 inventoried bridges in Auglaize County rated good (82.9%); 1 (0.3%) are rated poor.
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	Steel stringer or multi-beam girder
Length	about 91 ft
Location	.11MI. E. of Jct. SR-66
NBI structure number	0600032
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Ir-75 over Quaker Run	1958	35,347	Good
Ir-75 over Usr 33	1959	18,354	Fair
Ir-75 over Usr 33	1959	18,354	Fair
Ir-75 over Penn Central R.R.	1958	18,354	Good
Ir-75 over Penn Central R.R.	1958	18,354	Good
Ir-75 over Pusheta Creek	1962	18,325	Good