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
I-96WB
UnknownOver: M-11
@ M-11, Kent, MI
Built 1961 ADT: 42,456
I-296 WB/US-131 SB
UnknownOver: ANN STREET
IN GRAND RAPIDS (ANN ST), Kent, MI
Built 1962 ADT: 17,300
M-6 EB
UnknownOver: KRAFT AVENUE
CALEDONIA TWP SEC 5&6, Kent, MI
Built 1999 ADT: 11,460
US-131 NB
UnknownOver: GRAND RIVER & FULTON ST
IN GRAND RAPIDS, Kent, MI
Built 1999 ADT: 11,470
US-131 SB
UnknownOver: CESAR E CHAVEZ AVE
IN GRAND RAPIDS, Kent, MI
Built 1999 ADT: 3,662
BURLINGAME AVE
UnknownOver: M-6
BYRON TWP SEC 2&3, Kent, MI
Built 2001 ADT: 51,630
M-6 EB
UnknownOver: CLYDE PARK AVENUE
BYRON TWP SEC 1&2, Kent, MI
Built 2000 ADT: 3,500
M-6 WB C-D
UnknownOver: CLYDE PARK AVENUE
BYRON TWP SEC 1&2, Kent, MI
Built 2000 ADT: 3,500
M-6 WB
UnknownOver: DIVISION AVENUE
BYRON TWP SEC 1, Kent, MI
Built 2000 ADT: 3,500
M-6 WB
UnknownOver: EASTERN AVENUE
GAINES TWP SEC 5&6, Kent, MI
Built 2001 ADT: 3,500
EAST PARIS AVE
UnknownOver: M-6
GAINES TWP SEC 1&2, Kent, MI
Built 2001 ADT: 40,180
PATTERSON AVENUE
UnknownOver: M-6
GAINES TWP SEC 1, Kent, MI
Built 2000 ADT: 40,180
US-131 S TO M-6 W
UnknownOver: CLYDE PARK AVENUE
BYRON TWP SEC 1&2, Kent, MI
Built 2000 ADT: 2,000
US-131 SB
UnknownOver: FRONT AVENUE
IN GRAND RAPIDS, Kent, MI
Built 2000 ADT: 2,500
US-131 SB
UnknownOver: PEARL STREET
IN GRAND RAPIDS, Kent, MI
Built 2000 ADT: 10,945
AIRWAY STREET
UnknownOver: JUPITER AVE
0.3 MI E OF HUNSBERGER AV, Kent, MI
Built 1999 ADT: 8,500
I-96 WB
UnknownOver: RAMP A
CASCADE TWP, Kent, MI
Built 2005 ADT: 22,000
I-96 WB
UnknownOver: RAMP B
CASCADE TWP, Kent, MI
Built 2005 ADT: 1,500
NB CONN TO I-96 WB
UnknownOver: I-96 WB TO 36TH SB CONN
CASCADE TWP, Kent, MI
Built 2005 ADT: 12,500
I-296 (US-131) SB
UnknownOver: US-131 BR (LEONARD)
IN GRAND RAPIDS, Kent, MI
Built 1961 ADT: 22,078
CASCADE RD WB
UnknownOver: I-96
1 MI N OF M-21, Kent, MI
Built 2016 ADT: 76,745
LATSON ROAD
UnknownOver: I-96
GENOA TWP SEC 8-9, Livingston, MI
Built 2013 ADT: 46,200
CONRAIL
UnknownOver: I-696
IN CENTERLINE, Macomb, MI
Built 1972 ADT: 174,100
M-59 EB
UnknownOver: I-94
CHESTERFIELD/HARRISON TWP, Macomb, MI
Built 1996 ADT: 97,216
M-53 SB
UnknownOver: VAN DYKE RD & M-53 RMP
0.3 MI N OF 18 MILE RD, Macomb, MI
Built 2004 ADT: 77,777
M-20 WB
UnknownOver: TITTABAWASSEE RIVER
IN MIDLAND, Midland, MI
Built 2018 ADT: 22
OTTER CREEK RD
UnknownOver: I-75
4.0 MI SW OF MONROE, Monroe, MI
Built 1974 ADT: 58,600
ORCHARD LAKE RD
UnknownOver: US-24
IN PONTIAC, Oakland, MI
Built 2000 ADT: 54,018
M-10 WB
UnknownOver: US-24
IN SOUTHFIELD, Oakland, MI
Built 1964 ADT: 139,700
MIDDLEBELT RD
UnknownOver: I-696
5.7 MI E OF I-96, Oakland, MI
Built 1961 ADT: 158,700
FRANKLIN RD
UnknownOver: I-696
IN SOUTHFIELD, Oakland, MI
Built 2006 ADT: 158,700
GTWRR(EAST TRACK)
UnknownOver: M-59
CITY OF PONTIAC, Oakland, MI
Built 1998 ADT: 27,166
SQUIRREL RD SB
UnknownOver: M-59
PONTIAC TWP SEC 25, Oakland, MI
Built 1999 ADT: 81,056
WB M-59(OFF RMP)
UnknownOver: ADAMS RD ON RAMP
ROCHESTER HILLS, Oakland, MI
Built 2004 ADT: 6,000
UNIVERSITY DRIVE
UnknownOver: I-75
1.6 MI N OF M-59, Oakland, MI
Built 2015 ADT: 139,794
NB I-75
UnknownOver: NORTH TO WEST RAMP
SQUARE LAKE INTERCHANGE, Oakland, MI
Built 2017 ADT: 2,500
M-6 EB, RAMP D
UnknownOver: I-196 WB , RAMP C
GEORGETOWN TWP SEC 35, Ottawa, MI
Built 2004 ADT: 16,313
I-196 WB TO M-6 EB
UnknownOver: I-196 EB
GEORGETOWN TWP 35, Ottawa, MI
Built 2004 ADT: 17,686
M-231
UnknownOver: BUCHANAN STREET
1.0 MI N OF M-45, Ottawa, MI
Built 2014 ADT: 300
M-231
UnknownOver: NORTH CEDAR DRIVE
4.2 MI N OF M-45, Ottawa, MI
Built 2012 ADT: 200
MORRICE RD
UnknownOver: I-69
2.3 MI NE OF M-52, Shiawassee, MI
Built 1966 ADT: 36,360
MELDRUM RD
UnknownOver: I-94
4.3 MI NE OF MACOMB COL, St. Clair, MI
Built 1964 ADT: 31,102
I-94 & I-69
UnknownOver: M-25 PINE GROVE AVE
PORT HURON @ PLAZA, St. Clair, MI
Built 1993 ADT: 21,992
I-94 & I-69 EB
UnknownOver: BLACK RIVER & SCOTT AVE
W CITY LIMITS, St. Clair, MI
Built 2011 ADT: 150
I-196 SB
UnknownOver: 32 ND AVE (CR378)
5.1 MI NE OF BERRIEN COL, Van Buren, MI
Built 1963 ADT: 1,560
32ND ST (CR653)
UnknownOver: I-94
5.0 MI W OF KALAMAZOO COL, Van Buren, MI
Built 1960 ADT: 42,225
I-94 EB
UnknownOver: WIARD RD
2.0 MI SE OF YPSILANTI, Washtenaw, MI
Built 1958 ADT: 11,000
PLATT RD
UnknownOver: I-94
0.8 MI W OF US-23, Washtenaw, MI
Built 1998 ADT: 78,348
US-12 (M/E TRI LVL
UnknownOver: ACM TEST TRACK
0.5 MI W OF CO LINE, Washtenaw, MI
Built 1942 ADT: 11,500
HARRIS RD
UnknownOver: I-94
1.0 MI E OF YPSILANTI, Washtenaw, MI
Built 1971 ADT: 22,756
Showing 51-100 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 |