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
Data updated May 2026
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
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.
MA
Massachusetts
7.96% top marginal rate
MO
Missouri
8.53% top marginal rate
MI
Michigan
8.92% top marginal rate
AK
Alaska
10.12% top marginal rate
PA
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
US-31 BR (58 TH)
UnknownOver: US-31 NB
IN HOLLAND, Allegan, MI
Built 1964 ADT: 11,088
US-31 SB
UnknownOver: US-31 BR (58 TH STREET)
IN HOLLAND, Allegan, MI
Built 1964 ADT: 17,386
114 TH AVE
UnknownOver: I-196 & US-31
7.5 MI N OF VAN BUREN COL, Allegan, MI
Built 1964 ADT: 18,868
146 TH AVE
UnknownOver: I-196
1.2 MI S OF OTTAWA COL, Allegan, MI
Built 1972 ADT: 18,246
US-10 WB & M-25 NB
UnknownOver: I-75
1.5 MI W OF BAY CITY, Bay, MI
Built 2015 ADT: 57,900
MAUDLIN ROAD
UnknownOver: I-94
0.5 MI E OF NEW BUFFALO, Berrien, MI
Built 1964 ADT: 43,500
TERRITORIAL ROAD
UnknownOver: I-94
2.7 MI NE BENTON HARBOR, Berrien, MI
Built 2021 ADT: 56,570
RED ARROW HIGHWAY
UnknownOver: I-196
1.0 MI N OF I-94, Berrien, MI
Built 1963 ADT: 21,302
US-31 SB
UnknownOver: MATTHEW ROAD
5.6 MI N OF US-12, Berrien, MI
Built 1998 ADT: 200
OXBOW ROAD
UnknownOver: US-31
4.2 MI N OF OLD US-31, Berrien, MI
Built 1999 ADT: 10,102
MEADOWBROOK ROAD
UnknownOver: US-31
8.3 MI N OF OLD US-31, Berrien, MI
Built 2001 ADT: 7,402
NAPIER AVE
UnknownOver: US-31
9.0 MI N OF OLD US-31, Berrien, MI
Built 2000 ADT: 7,402
BRITAIN AVE
UnknownOver: US-31 (RELOC)
0.5 MI E OF I-94/US-31, Berrien, MI
Built 2021 ADT: 10,800
COPELAND ROAD
UnknownOver: I-69
10.0 MI S OF US-12, Branch, MI
Built 1967 ADT: 21,850
J DRIVE S
UnknownOver: I-69 NB
7.5 MI N OF BRANCH COL, Calhoun, MI
Built 1968 ADT: 10,545
9 MILE R0AD
UnknownOver: KALAMAZOO RV&PARK ACCESS
EMMETT TWP SEC 15, Calhoun, MI
Built 1990 ADT: 10
MULLET-BURT RD
UnknownOver: I-75
4.3 MI N OF M-27, Cheboygan, MI
Built 1960 ADT: 7,974
US-31 NB
UnknownOver: I-75
@ I-75, US-31 JCT, Cheboygan, MI
Built 1959 ADT: 9,144
US-10 CON TO US127
UnknownOver: US-127 NB & EBERHART RD
0.8 MI NW OF ISABELLA COL, Clare, MI
Built 1961 ADT: 12,604
CLARABELLA RD
UnknownOver: US-10 CONN
@ ISABELLA CO LINE, Clare, MI
Built 1961 ADT: 3,900
US-10 WB
UnknownOver: M-115
3.5 MI NW OF FARWELL, Clare, MI
Built 1973 ADT: 5,855
MOSTETLER RD
UnknownOver: US-127 SB
1.3 MI N US-127BR, M-61, Clare, MI
Built 1966 ADT: 3,324
I-69 EB
UnknownOver: PEACOCK ROAD
0.5 MI W OF COUNTY LINE, Clinton, MI
Built 1989 ADT: 1,500
US-127 BR
UnknownOver: I-69
AT N LTS OF LANSING, Clinton, MI
Built 1971 ADT: 37,998
CHADWICK ROAD
UnknownOver: US-127
1.2 M N LOOKING GLASS RIV, Clinton, MI
Built 1996 ADT: 26,922
HOWE ROAD
UnknownOver: US-127
0.9 MI S LOOKING GLASS R, Clinton, MI
Built 1997 ADT: 28,718
ROUND LAKE ROAD
UnknownOver: US-127
0.1 M N LOOKING GLASS RIV, Clinton, MI
Built 1997 ADT: 28,718
PRICE ROAD
UnknownOver: US-127
5.0 MI S OF ST JOHNS, Clinton, MI
Built 1993 ADT: 23,088
TAFT ROAD
UnknownOver: US-127
3.0 MI S OF M-21, Clinton, MI
Built 1993 ADT: 23,088
I-75 SB
UnknownOver: M-72
@ I-75, M-72 JCT, Crawford, MI
Built 1961 ADT: 6,418
N DOWN RIVER RD
UnknownOver: I-75
1.0 MI N OF M-72, Crawford, MI
Built 1961 ADT: 14,316
I-69 SB
UnknownOver: WINDSOR & NIXON HWY
2.0 MI NE OF POTTERVILLE, Eaton, MI
Built 1989 ADT: 3,500
CANAL RD
UnknownOver: I-496
3.2 MI W OF LANSING, Eaton, MI
Built 1969 ADT: 35,025
I-475 SB
UnknownOver: I-75 NB
4.5 MI S OF FLINT, Genesee, MI
Built 1971 ADT: 29,102
I-475
UnknownOver: HORTON AVE
IN FLINT, Genesee, MI
Built 1977 ADT: 5,564
I-475
UnknownOver: DETROIT ST
3.0 MI E OF N JCT I-75, Genesee, MI
Built 1971 ADT: 3,000
LEFT TURN LANE NO2
UnknownOver: I-475
AT S LIMITS OF FLINT, Genesee, MI
Built 1971 ADT: 48,400
I-475 RAMP B
UnknownOver: I-475
IN FLINT, Genesee, MI
Built 1977 ADT: 41,600
M-57
UnknownOver: US-127
WASHINGTON TWP SEC 8 & 17, Gratiot, MI
Built 2000 ADT: 18,150
I-496 EB & RAMP U
UnknownOver: CSX RR & HOLMES ST
IN LANSING, Ingham, MI
Built 1969 ADT: 1,400
I-496 EB
UnknownOver: US-127 RAMP SB
RAMP TO TROWBRIDGE RD, Ingham, MI
Built 1970 ADT: 11,500
I-496 WB SERV RD
UnknownOver: GR RIV,I-96 BL, RIVER ST
IN LANSING, Ingham, MI
Built 2000 ADT: 25,306
CSX RR
UnknownOver: FARM LANE
MICHIGAN STATE UNIVERSITY, Ingham, MI
Built 2008 ADT: 11,510
CN RR
UnknownOver: FARM LANE
MICHIGAN STATE UNIVERSITY, Ingham, MI
Built 2008 ADT: 11,510
I-96 WB
UnknownOver: PORTLAND RD
6.0 MI E OF M-66, Ionia, MI
Built 1958 ADT: 310
M-106
UnknownOver: I-94
@ M-106 (COOPER STREET), Jackson, MI
Built 2019 ADT: 56,475
SPRINKLE RD
UnknownOver: M-96 (KING HIGHWAY)
1.9 M N OF I-94, Kalamazoo, MI
Built 1967 ADT: 5,183
US-131 BR NB
UnknownOver: DOUGLAS AVE
3.2 MI E OF US-131, Kalamazoo, MI
Built 1963 ADT: 8,086
I-94 EB
UnknownOver: US-131SB TO I-94 EB CONN
I-94/US-131 INTERCHANGE, Kalamazoo, MI
Built 2008 ADT: 25,235
S US-131 TO E I-94
UnknownOver: NB US-131
I-94/US-131 INTERCHANGE, Kalamazoo, MI
Built 2008 ADT: 23,080
Showing 1-50 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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.