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Atherton Road over Thread River

Genesee County, Michigan · rated Fair in the 2025 National Bridge Inventory

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

Atherton Road over Thread River in Genesee County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1928 and reconstructed in 2012, making it 97 years old at the 2025 inventory.
It carries about 10,339 vehicles a day (traffic count year 2008).
Its listed owner is a city or municipal highway agency.
It is one of 227 of the 369 inventoried bridges in Genesee County rated fair (61.5%); 53 (14.4%) 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	Prestressed concrete single box beam
Length	about 44 ft
Location	0.25 Mile W of Center Rd
NBI structure number	000000000002718
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-69 over CSX RR	1971	96,200	Fair
I-69 EB over M-54\|s Dort Hwy	2015	96,200	Fair
I-69 over Gtw RR	1971	93,000	Fair
I-75 NB over Bristol Rd	2005	89,742	Fair
I-75 NB over Flushing Rd	1958	76,600	Fair
I-75 SB over Flushing Rd	1958	76,600	Fair