Total Bridges
1,188
Public highway bridges in Michigan
State profile · Above national median SD
Michigan bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Michigan — drawn straight from the FHWA National Bridge Inventory.
- 1,188
- Public bridges
- 28.4%
- Good condition
- 8.9%
- Poor condition
- 8.9%
- Structurally deficient
Good Condition
28.4%
337 bridges rated 7-9
-21.6pp vs 50% benchmark
Poor Condition
8.9%
106 bridges rated 0-4
Structurally Deficient
8.9%
106 bridges flagged for repair priority
1.9pp vs national avg 7.0%
Michigan vs national bridge condition
Michigan — Good condition share 28.4%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Michigan — Structurally deficient share 29.7%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Michigan (FHWA NBI)
Counties (83)
Alcona 8 Alger 9 Allegan 25 Alpena 3 Antrim 0 Arenac 2 Baraga 9 Barry 10 Bay 10 Benzie 3 Berrien 22 Branch 9 Calhoun 16 Cass 3 Charlevoix 3 Cheboygan 7 Chippewa 12 Clare 13 Clinton 9 Crawford 5 Delta 5 Dickinson 0 Eaton 8 Emmet 4 Genesee 15 Gladwin 6 Gogebic 11 Grand Traverse 5 Gratiot 10 Hillsdale 3 Houghton 9 Huron 4 Ingham 5 Ionia 3 Iosco 0 Iron 8 Isabella 12 Jackson 3 Kalamazoo 12 Kalkaska 0 Kent 37 Keweenaw 0 Lake 0 Lapeer 13 Leelanau 2 Lenawee 3 Livingston 6 Luce 2 Mackinac 7 Macomb 21 Manistee 2 Marquette 8 Mason 4 Mecosta 2 Menominee 2 Midland 10 Missaukee 2 Monroe 9 Montcalm 7 Montmorency 3 Muskegon 5 Newaygo 7 Oakland 49 Oceana 3 Ogemaw 0 Ontonagon 5 Osceola 3 Oscoda 1 Otsego 2 Ottawa 7 Presque Isle 2 Roscommon 5 Saginaw 4 Sanilac 1 Schoolcraft 16 Shiawassee 2 St. Clair 14 St. Joseph 8 Tuscola 29 Van Buren 17 Washtenaw 93 Wayne 460 Wexford 14
Michigan vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Michigan on the same metric.
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
26
Michigan
8.92% top marginal rate
02
Alaska
10.12% top marginal rate
42
Pennsylvania
10.50% top marginal rate
Bridges Needing Most Attention in Michigan
Six lowest-condition bridges in Michigan, ranked by composite NBI rating. Each is inspected at least every 24 months.
STEVENSON ROAD
Structurally DeficientOver: S BR PINE RIVER
0.5 MI W OF NINE MILE RD, Bay, MI
Built 1970 Load: 0.3 t ADT: 150
NO 19 ROAD
Structurally DeficientOver: MANISTEE RIVER
SECTION 28 T24N R11W, Wexford, MI
Built 1906 Load: 2.9 t ADT: 106
PARKE LANE ROAD
Structurally DeficientOver: THOROFARE CH(GROSSE ILE)
GROSSE ILETWP S/BRIDGE ST, Wayne, MI
Built 1930 Load: 3.2 t ADT: 1,365
STREICHER ROAD
PoorOver: SILVER CREEK
BROWNSTOWN S/HURON RIV DR, Wayne, MI
Built 1936 Load: 7.8 t ADT: 253
REECK ROAD
Structurally DeficientOver: SEXTON-KILFOIL DRAIN
IN ALLEN PARK, Wayne, MI
Built 1960 Load: 7.8 t ADT: 5,600
LOG ROAD
Structurally DeficientOver: SOUTH BR SWAN CREEK
BETHEL TWP SEC 8, Branch, MI
Built 1982 Load: 8.1 t ADT: 110
All Bridges in Michigan
HADLEY ROAD
FairOver: ST JOSEPH RIVER
1.1 MI N OF LITCHFIELD, Hillsdale, MI
Built 1965 Load: 43.0 t ADT: 418
BATES STREET
FairOver: PARKING LOT
250 FT S OF JEFFERSON AVE, Wayne, MI
Built 2000 Load: 43.1 t ADT: 2,021
LAKE ROAD
FairOver: MONTREAL RIVER
SEC 15 IRONWOOD TWP, Gogebic, MI
Built 1928 Load: 43.6 t ADT: 388
OUTER DRIVE
FairOver: MIDDLE ROUGE RIVER
DBN HTS S/E N HINES DRIVE, Wayne, MI
Built 1928 Load: 43.7 t ADT: 11,000
M-89
FairOver: SCHNABLE RIVER
4.8 MI NW OF OTSEGO, Allegan, MI
Built 1988 Load: 44.7 t ADT: 12,100
US-131 NB
FairOver: GUN RIVER
1.5 MI N OF PLAINWELL, Allegan, MI
Built 1960 Load: 44.7 t ADT: 14,700
FOREST ROAD 360
FairOver: IRON RIVER
6 MI N 4 MI W OF BERGLAND, Ontonagon, MI
Built 1972 Load: 44.7 t ADT: 50
USFS RTE 2173
FairOver: LITTLE INDIAN RIVER BR
0.5 MI S BIG ISLAND LAKE, Schoolcraft, MI
Built 1963 Load: 44.7 t ADT: 75
FDR3500
FairOver: E BR ONTONAGON RIVER
8 MI SW OF SIDNAW, Houghton, MI
Built 2021 Load: 45.0 t ADT: 20
M-6 WB TO US-131 N
FairOver: NORFOLK SOUTHERN RR
BYRON TWP SEC 1, Kent, MI
Built 2000 Load: 45.0 t ADT: 9,700
MONROE ROAD
FairOver: ECORSE CREEK
IN DEARBORN HEIGHTS, Wayne, MI
Built 1977 Load: 45.4 t ADT: 14,820
COATES HIGHWAY
FairOver: ARQUILLA CREEK
740 FT N OF COATES HWY, Manistee, MI
Built 2016 Load: 45.7 t ADT: 249
HERR ROAD
FairOver: PLUM CREEK
0.1 MI N OF DUNBAR ROAD, Monroe, MI
Built 1965 Load: 45.7 t ADT: 3,320
HUBERT ROAD
FairOver: N BR THUNDER BAY RIVER
SEC 2-11 MONTMORENCY TWP, Montmorency, MI
Built 1994 Load: 45.7 t ADT: 150
BAY PARK ROAD
FairOver: AKRON CENTERLINE DRAIN
SEC 3-32 AKRON, Tuscola, MI
Built 1972 Load: 45.7 t ADT: 412
BECK ROAD
FairOver: FELLOWS CREEK
CANTON T N/FORD, Wayne, MI
Built 1993 Load: 45.7 t ADT: 7,200
KYRO ROAD
FairOver: STURGEON RIVER
6 MI W OF BARAGA, Baraga, MI
Built 1988 Load: 46.0 t ADT: 176
CENTER STREET
FairOver: SEBEWAING RIVER
0.25 MI W OF M-25, Huron, MI
Built 2003 Load: 46.0 t ADT: 4,900
BLAIR ROAD
FairOver: BAD RIVER DRAIN
SEC 13-14 NORTH STAR TWP, Gratiot, MI
Built 1978 Load: 46.9 t ADT: 114
SENTRY DRIVE
FairOver: CANADIAN NATIONAL RAILRO
0.3 MILES EAST OF GATE AT, Calhoun, MI
Built 2002 Load: 47.2 t ADT: 150
M-14 EB
FairOver: CSX RR
1.5 MI W OF PLYMOUTH, Wayne, MI
Built 1976 Load: 47.3 t ADT: 36,640
US-24
FairOver: CONRAIL
4.5 MI N OF FLAT ROCK, Wayne, MI
Built 1935 Load: 48.6 t ADT: 23,232
US-24-I-75 CONN SB
FairOver: CONRAIL
IN TAYLOR, Wayne, MI
Built 1963 Load: 48.6 t ADT: 9,440
36TH STREET
FairOver: RAVINE
0.1 MILE E OF KRAFT AVE, Kent, MI
Built 2004 Load: 50.3 t ADT: 21,000
FISHER ROAD
FairOver: HOWELL-OSCEOLA DRAIN
SEC 12 HOWELL TWP, Livingston, MI
Built 1921 Load: 50.5 t ADT: 420
CR 687
FairOver: S BR BLACK RIVER
0.6 MI NORTH OF CR 380, Van Buren, MI
Built 1965 Load: 50.9 t ADT: 721
HORSE MILL ROAD
FairOver: THOROFARE CANAL
GROSSE ILE E/MERIDIAN, Wayne, MI
Built 1937 Load: 51.2 t ADT: 1,338
NORTH TERRITORIAL
FairOver: HURON RIVER
DEXTER TWP SECTION 13, Washtenaw, MI
Built 1995 Load: 51.4 t ADT: 9,058
US-12
FairOver: SALINE RIVER
IN SALINE, Washtenaw, MI
Built 1967 Load: 51.5 t ADT: 20,885
WALNUT AVE
FairOver: LS BR PERE MARQUETTE RIV
0.25 MI N OF 14 MILE RD, Newaygo, MI
Built 1980 Load: 51.8 t ADT: 150
M-8 E-S RAMP
FairOver: GTW RR
IN DETROIT, Wayne, MI
Built 1971 Load: 51.8 t ADT: 22,520
SEVEN MILE ROAD
FairOver: MIDDLE ROUGE RIVER
NORTHVILLE W/NORTHVILL RD, Wayne, MI
Built 1954 Load: 51.8 t ADT: 7,853
HARRISON ST
FairOver: S BR ECORSE RIVER
IN LINCOLN PARK, Wayne, MI
Built 2011 Load: 51.8 t ADT: 1,100
US-131 BR
FairOver: CLAM RIVER
IN CADILLAC, Wexford, MI
Built 1935 Load: 51.8 t ADT: 23,406
M-85 SB
FairOver: FRANK & POET DRAIN
IN TRENTON, Wayne, MI
Built 1958 Load: 52.2 t ADT: 15,575
M-85 NB
FairOver: FRANK & POET DRAIN
IN TRENTON, Wayne, MI
Built 1958 Load: 52.8 t ADT: 15,575
M-115
FairOver: MANISTEE RIVER
1.0 MI W OF MESICK, Wexford, MI
Built 1949 Load: 53.1 t ADT: 6,975
MARQUETTE WOODS RD
FairOver: HICKORY CREEK
1.5 MI NE OF STEVENSVILLE, Berrien, MI
Built 1966 Load: 54.1 t ADT: 4,582
M-13
FairOver: S BR PINE RIVER
3.0 MI S OF STANDISH, Arenac, MI
Built 1935 Load: 54.4 t ADT: 7,706
9 MILE ROAD
FairOver: N BR CARROLL CREEK
JEROME TWP SEC 33/34, Midland, MI
Built 2017 Load: 54.4 t ADT: 500
MARIAN DRIVE
FairOver: FRANK AND POET DRAIN
IN TRENTON, Wayne, MI
Built 1959 Load: 55.1 t ADT: 3,300
M-19
FairOver: COWHY DRAIN
N END OF M-19/I-69 INTRCH, St. Clair, MI
Built 1981 Load: 56.1 t ADT: 6,607
FULLER ROAD
FairOver: NORFOLK SOUTHERN RR
0.75 MI E OF US-23 BR, Washtenaw, MI
Built 1982 Load: 56.1 t ADT: 18,600
BRADLEYVILLE ROAD
FairOver: NORTHWEST DRAIN
SEC 2-3 DENMARK TWP, Tuscola, MI
Built 1972 Load: 57.2 t ADT: 2,000
JERUSALEM RD
FairOver: MILL CREEK
LIMA TWP SEC 24 & 25, Washtenaw, MI
Built 1933 Load: 57.3 t ADT: 89
DRAHNER ROAD
FairOver: LONG LAKE OUTLET
SECT 28/33 OXFORD TWP, Oakland, MI
Built 1960 Load: 57.7 t ADT: 8,305
COOKLIN ROAD
FairOver: BUTTERNUT CREEK DRAIN
SEC 34 ELLINGTON TWP, Tuscola, MI
Built 1978 Load: 57.7 t ADT: 60
OAKVILLE-WALTZ RD
FairOver: SWAN CREEK
HURON/MONROE CO W/I-275, Wayne, MI
Built 1927 Load: 57.7 t ADT: 8,284
FULLER ROAD (WB)
FairOver: HURON RIVER
0.5 MI EAST OF WALL ST, Washtenaw, MI
Built 1994 Load: 58.0 t ADT: 11,250
CO RD 510(RELOC)
FairOver: DEAD RIVER
2 MILES N OF US-41, Marquette, MI
Built 2010 Load: 58.3 t ADT: 1,912
Showing 651-700 of 1,188 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |