Bridge conditions in Genesee County, Michigan 369 inventoried bridges · 53 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
Of the 369 Genesee County bridges in the federal inventory, 53 carry a poor rating. That 14.4% share is roughly 2x the national average.
53 of the 369 bridges in Genesee County, Michigan, are rated in poor condition (14.4%) in the 2025 National Bridge Inventory, as of August 20, 2026 .89 bridges (24.1%) are rated good and 227 (61.5%) fair.
The median Genesee County bridge was built in 1970 .
The busiest poor-rated bridge is I-475 over Chavez Dr (built 1976), carrying about 63,400 vehicles a day.
Good 24.1% · Fair 61.5% · Poor 14.4% of 369 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-475 over Chavez Dr 1976 63,400 Poor I-475 over Davison - Broadway Aves 1976 63,400 Poor I-475 over CSX RR & NB Serv Rd(abn) 1971 59,000 Poor I-75 Ramp H & M over Swartz Creek 1969 33,600 Poor M-54 over Thread Creek 1976 20,772 Poor I-69 EB over Linden Rd 1968 19,829 Poor I-69 WB over Linden Rd 1968 19,829 Poor M-21 over CSX RR (abn) 1918 15,341 Poor Hemphill Rd over I-475 1971 15,000 Poor I-475 SB over I-75 NB 1971 13,158 Poor Robert T Longway over Gilkey Creek 1954 12,809 Poor Baldwin Road over Swartz Creek 1938 12,678 Poor I-475 Ramp B over I-75 1971 11,989 Poor Thompson Rd over US-23 1957 9,650 Poor I-75 to I-69 Rmp B over Gtw RR &I-75 1969 9,590 Poor North Road over Shiawassee River 1958 8,500 Poor Center Road over Thread River 1928 7,716 Poor Mt Morris Road over Brent Run 1929 6,864 Poor I-75 Ramps H & M over I-69 Ramp L 1969 6,800 Poor North Road over Shiawassee River 1928 5,647 Poor Grand Traverse over Flint River 1954 5,338 Poor Torrey Rd over US-23 1957 5,326 Poor I-69 WB Ramps H&f over Ballenger Rd 1969 4,900 Poor I-75 Ramp C over I-75 1969 4,800 Poor Sunset Drive - 3RD over Flint River 1957 4,519 Poor Western Road over Kearsley Creek 1928 4,195 Poor Baldwin Road over Thread River 1928 4,097 Poor Seymour Road over Shiawassee River 1930 3,587 Poor Coldwater Rd over I-75 1957 3,308 Poor Morrish Road over Alger Creek 1928 3,044 Poor Left Turn Lane NO2 over I-475 1971 3,000 Poor Carpenter Rd over I-75 1957 2,967 Poor Dodge Road over Brent Run 1926 2,595 Poor Torrey Road over Call Creek 1968 2,368 Poor W Second Street over Swartz Creek 1919 1,798 Poor Leith Street over W Boulevard; Flint River 1967 1,084 Poor Mckinley Road over Brent Run 1929 701 Poor Frances Road over Butternut Creek 1937 643 Poor Lake Road over Pine Run 1938 596 Poor Cook Road over Swartz Creek 1930 542 Poor Wilson Road over Butternut Creek 1926 366 Poor Vassar Road over Butternut Creek 1930 346 Poor Jordan Road over Kearsley Creek 1934 315 Poor Stevenson over Flint River 1968 294 Poor Nichols Road over Jones Creek 1938 232 Poor Nichols Road over Misteguay Creek 1930 221 Poor Henderson Road over Kearsley Creek 1937 215 Poor Cook Road over Jones Creek 1937 197 Poor Calkins Road over Misteguay Creek 1938 91 Poor Franklin Avenue over Gilkey Creek 1989 – Poor Chambers Street over Thread Creek 1970 – Poor Old Cambridge Ave over Swartz Creek 1924 – Poor Beach Street over Thread Creek 1964 – Poor
Busiest bridges in the county 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 I-75 US-23 over Flint River 1958 73,748 Fair I-75 over Court St 1957 70,414 Fair I-75 over Swartz Creek 1954 66,912 Fair I-69 over CSX RR Fenton Thread(abn 1970 65,450 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 Genesee County →
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 .