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Rt Z N over S Fk North Rvr

Marion County, Missouri · rated Good in the 2025 National Bridge Inventory

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

Rt Z N over S Fk North Rvr in Marion County, Missouri, 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 2012, making it 13 years old at the 2025 inventory.
It carries about 704 vehicles a day (traffic count year 2024).
Its listed owner is the state highway agency.
It is one of 69 of the 186 inventoried bridges in Marion County rated good (37.1%); 17 (9.1%) 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	Prestressed concrete multiple box beam
Length	about 195 ft
Location	S 8 T 57 N R 7 W
NBI structure number	34120
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US 61 S over Minnow CR	1930	29,762	Fair
US 24 E over Drain Dtch	1928	19,835	Fair
US 24 E over BNSF RR	1992	19,828	Good
Is 72 E over Rp US61S to IS72E Rp Is	2000	19,756	Good
US 61 S over James CR	1930	19,001	Fair
Is 72 E over Mississippi Rvr Cst 410	2000	17,638	Poor