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Bridge conditions in Ingham County, Michigan

241 inventoried bridges · 30 rated poor · 2025 National Bridge Inventory

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

Ingham County has 30 bridges rated poor out of 241 inventoried, a 12.4% share that puts it well above the national rate of about 7%.

30 of the 241 bridges in Ingham County, Michigan, are rated in poor condition (12.4%) in the 2025 National Bridge Inventory, as of August 20, 2026.
40 bridges (16.6%) are rated good and 171 (71.0%) fair.
The median Ingham County bridge was built in 1968.
The busiest poor-rated bridge is I-496 WB over US-127 SB (built 1970), carrying about 39,163 vehicles a day.

Good 16.6% · Fair 71.0% · Poor 12.4% of 241 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
I-496 WB over US-127 SB	1970	39,163	Poor
I-496 EB over Red Cedar River & Ramp V	1970	34,831	Poor
I-496 EB over CSX RR & Trowbridge Rmp	1963	34,668	Poor
I-496 EB over Gtw RR	1963	34,668	Poor
I-496EB & US-127SB over I-96 WB	1966	29,356	Poor
I-496 EB over Forest Rd	1963	29,013	Poor
US-127 NB over Red Cedar Riv & Ramp V	1964	24,173	Poor
US-127 SB over Red Cedar Riv & Ramp V	1964	24,173	Poor
I-96 Bl over Gtw South St & Red Cedar	1952	23,865	Poor
I-96 EB over Deer Creek	1962	23,287	Poor
I-96 WB over Deer Creek	1962	23,287	Poor
M-43 WB (gr Riv) over US-127	1970	20,897	Poor
Harrison Road over Red Cedar River	1937	18,646	Poor
US-127 NB over College Rd	1966	16,286	Poor
M-43 over Red Cedar River	1924	13,900	Poor
Aurelius Road over Pawlowski Creek Drain	1978	13,294	Poor
Ramp T over CSX RR & Holmes St	1969	7,766	Poor
M-36 over Sycamore Creek	1918	5,910	Poor
College Rd over I-96	1963	5,200	Poor
Hagadorn Road over Mud Creek	1937	3,876	Poor
E Elm Street over Red Cedar River	1980	2,000	Poor
Eifert Rd over W Aurelius Drain	1975	600	Poor
Noble Road over Deer Creek	1925	490	Poor
Linn Road over Doan Creek	1964	300	Poor
Gale Road over Columbia Creek	1978	250	Poor
Dennis Road over West Cedar Drain	1900	250	Poor
Curtice Rd over Columbia Creek	1969	200	Poor
Frost Road over Deer Creek	1921	100	Poor
Small Acres Lane over Pine Lake Outlet Drain	1925	10	Poor
W Wallace Street over Deer Creek	1945	10	Poor

Busiest bridges in the county

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
I-496 WB over Gtw RR	2024	39,163	Good
I-496 WB over US-127 SB	1970	39,163	Poor
I-496 WB over US-127 SB Ramp	1970	39,163	Fair
I-496 WB over I-496 EB Ramp to I-96 EB	1963	35,682	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

Every bridge in Ingham County → - all 241, busiest first, each with its own condition record.

All of Michigan: Michigan bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.