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
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |