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
28 MILE RD
Structurally DeficientOver: DEER CREEK
1000' E OF PLACE RD, Macomb, MI
Built 1968 ADT: 70
MILLER ROAD
Structurally DeficientOver: CONRAIL
DEARBORN S/MICHIGAN, Wayne, MI
Built 1931 ADT: 23,965
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
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
OLD-27
Structurally DeficientOver: ST JOSEPH RIVER
TEKSHONA TWP SEC 27, Calhoun, MI
Built 1930 Load: 8.1 t ADT: 2,524
ROSBOLT RD
Structurally DeficientOver: PAINT CREEK
AUGUSTA TWP SEC 15, Washtenaw, MI
Built 1928 Load: 8.1 t ADT: 69
CHESTERFIELD RD
Structurally DeficientOver: QUARTON BR/ROUGE RIVER
IN BLOOMFIELD HILLS, Oakland, MI
Built 1979 Load: 8.7 t ADT: 1,000
34 MILE RD
Structurally DeficientOver: HIGHBANK CREEK
1200' E OF ARMADA RIDGE, Macomb, MI
Built 1968 Load: 10.4 t ADT: 114
CASSOPOLIS RD
Structurally DeficientOver: CHRISTIANA CREEK
580 FT N OF MT ZION ST, Cass, MI
Built 1960 Load: 10.7 t ADT: 159
PARKER ROAD
Structurally DeficientOver: TRIB TO MILL CREEK
SCIO TWP SEC 30, Washtenaw, MI
Built 1968 Load: 10.7 t ADT: 300
MAIN ST OVERPASS
Structurally DeficientOver: AMTRAK RAILROAD
MATTAWAN MICHIGAN, Van Buren, MI
Built 1980 Load: 11.3 t ADT: 5,023
SIBLEY ROAD (EAST)
Structurally DeficientOver: LETTS CREEK
SYLVAN TWP SEC 2, Washtenaw, MI
Built 1968 Load: 12.0 t ADT: 200
MARR ROAD
Structurally DeficientOver: S BR SHIAWASSEE RIVER
SEC 10 HOWELL TWP, Livingston, MI
Built 1937 Load: 12.6 t ADT: 348
FERRY STREET
Structurally DeficientOver: THOROFARE CANAL
GROSSE ILE E/MERIDIAN, Wayne, MI
Built 1947 Load: 12.6 t ADT: 971
BRAND AVENUE
Structurally DeficientOver: NORTH BR TOBACCO RIVER
SEC 16-17 ARTHUR TWP, Clare, MI
Built 1939 Load: 13.9 t ADT: 280
NORTHVILLE ROAD
Structurally DeficientOver: MIDDLE ROUGE RIVER
NORTHVILE T S/SIX MILE, Wayne, MI
Built 1922 Load: 14.3 t ADT: 8,758
LONG ISLAND COURT
Structurally DeficientOver: UNNAMED CANAL
SEC. 22 IRA TWP, St. Clair, MI
Built 1982 Load: 14.9 t ADT: 350
JORDAN ROAD
Structurally DeficientOver: LITTLE THORNAPPLE RIVER
400 FT E OF MARTIN RD, Barry, MI
Built 1972 Load: 18.5 t ADT: 100
OLD-27
Structurally DeficientOver: NOTTAWA CREEK
FREDONIA TWP SEC 35, Calhoun, MI
Built 1930 Load: 19.4 t ADT: 1,797
BLACK RIVER FALLS
Structurally DeficientOver: BLACK RIVER
1.3 MI W OF CR 581, Marquette, MI
Built 1930 Load: 21.5 t ADT: 10
USFS RTE 3445
Structurally DeficientOver: CARP RIVER
0.1 MI W H63, Mackinac, MI
Built 1962 Load: 24.3 t ADT: 15
BEECH-DALY ROAD
Structurally DeficientOver: ROUGE RIVER
REDFORD N/FIVE MILE, Wayne, MI
Built 1932 Load: 24.6 t ADT: 29,650
SOUTHFIELD ROAD
Structurally DeficientOver: ECORSE CREEK
LINCOLN PK &ECORSE E/FORT, Wayne, MI
Built 1924 Load: 25.3 t ADT: 36,754
OLD CAMP 4 ROAD
Structurally DeficientOver: SAND RIVER
USE LAT LON & HOPE 2 FIND, Marquette, MI
Built 1980 Load: 25.9 t ADT: 5
SAGER RD
Structurally DeficientOver: MILL CREEK
LIMA TWP SEC 30 & 31, Washtenaw, MI
Built 1962 Load: 27.2 t ADT: 97
RACHO ROAD
Structurally DeficientOver: BLAKELY DRAIN
BRNTWNS/PENNSYLVANIA, Wayne, MI
Built 1935 Load: 28.5 t ADT: 3,405
MAXWELL ROAD
Structurally DeficientOver: SWAN CREEK
0.4 MI. S. OF NEWBURG RD., Monroe, MI
Built 1960 Load: 28.8 t ADT: 240
LISS ROAD
Structurally DeficientOver: PAINT CREEK
AUGUSTA TWP SEC 34, Washtenaw, MI
Built 1924 Load: 32.8 t ADT: 112
DAVIS PARK
Structurally DeficientOver: CASS RIVER OVERFLOW
DAVIS PARK, Saginaw, MI
Built 1979 Load: 33.0 t ADT: 6
E N HINES DRIVE
Structurally DeficientOver: MIDDLE ROUGE RIVER
PLYMOUTH T S/PLYMOUTH RD, Wayne, MI
Built 1932 Load: 36.6 t ADT: 7,192
BASE LINE
Structurally DeficientOver: CSX RR
NORTHVILLE E/NOVI RD, Wayne, MI
Built 1960 Load: 37.6 t ADT: 35,730
OLD-27
Structurally DeficientOver: INDIAN CREEK
LEE TWP SEC 7, Calhoun, MI
Built 1931 Load: 41.5 t ADT: 2,925
FARR RD
Structurally DeficientOver: NORRIS CREEK
SEC 29 FRUITPORT TWP, Muskegon, MI
Built 1972 Load: 41.8 t ADT: 500
MARTIN ROAD
Structurally DeficientOver: LITTLE THORNAPPLE RIVER
300 FT S OF JORDAN RD, Barry, MI
Built 1970 Load: 97.2 t ADT: 50
70TH AVENUE
Structurally DeficientOver: FRANZ CREEK
HIGHLAND TWP 25/26, Osceola, MI
Built 1965 Load: 97.2 t ADT: 367
Showing 1,151-1,188 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 |