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Old Plank Road over Grand River

Ingham County, Michigan · rated Good in the 2025 National Bridge Inventory

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

Old Plank Road over Grand River in Ingham County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2007, making it 18 years old at the 2025 inventory.
It carries about 710 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 40 of the 241 inventoried bridges in Ingham County rated good (16.6%); 30 (12.4%) 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 single box beam
Length	about 118 ft
Location	0.2 Mi SE of Onondaga
NBI structure number	000000000003857
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-96 over Kalamink Creek	1962	48,560	Fair
I-496 WB over Mount Hope Rd	1963	41,388	Fair
I-496 WB over Forest Rd	1963	41,388	Fair
I-496 WB over Jolly Rd	1963	41,388	Fair
I-496 WB over Red Cedar River & Ramp V	1970	39,163	Fair
I-496 WB over CSX RR & Trowbridge Rmp	2024	39,163	Good