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
MDOT RR CORRIDOR
UnknownOver: M-39
IN DEARBORN, Wayne, MI
Built 1929 ADT: 105,075
CSX RR
UnknownOver: M-39
IN DETROIT, Wayne, MI
Built 1963 ADT: 151,036
CONRAIL
UnknownOver: M-39 NB
IN LINCOLN PARK, Wayne, MI
Built 1923 ADT: 43,626
LYNDON AVE
UnknownOver: M-39
IN DETROIT, Wayne, MI
Built 1961 ADT: 162,158
FENKELL AVE
UnknownOver: M-39
IN DETROIT, Wayne, MI
Built 1962 ADT: 154,908
6 MI RD
UnknownOver: M-39
IN DETROIT, Wayne, MI
Built 1962 ADT: 154,908
7 MI RD
UnknownOver: M-39
IN DETROIT, Wayne, MI
Built 1963 ADT: 148,994
PEMBROKE AVE
UnknownOver: M-39
IN DETROIT, Wayne, MI
Built 1962 ADT: 132,268
I-75
UnknownOver: ROUGE R,DEARBORN ST & RR
IN DETROIT, Wayne, MI
Built 1967 ADT: 9,250
I-75 NB OFF RAMP
UnknownOver: RR AND MAINT RD
IN DETROIT, Wayne, MI
Built 1967 ADT: 100
I-75 SB ON RAMP
UnknownOver: ROUGE RIVER & PLEASANT S
IN DETROIT, Wayne, MI
Built 1967 ADT: 190,000
I-75 NB
UnknownOver: OUTER DRIVE
IN MELVINDALE, Wayne, MI
Built 1966 ADT: 19,000
I-75 SB
UnknownOver: OUTER DRIVE
IN MELVINDALE, Wayne, MI
Built 1966 ADT: 19,000
LIVERNOIS AVE
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 2021 ADT: 111,018
VERNOR AVE
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 2007 ADT: 82,122
I-75 SB
UnknownOver: I-96 WB
IN DETROIT, Wayne, MI
Built 1970 ADT: 17,896
US-12
UnknownOver: I-75 SB
IN DETROIT, Wayne, MI
Built 1970 ADT: 33,794
14TH ST
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1970 ADT: 80,318
ROSA PARKS (12TH)
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1970 ADT: 87,782
ROSA PARKS EXT RMP
UnknownOver: I-75 N COLLECTOR-DIST RD
IN DETROIT, Wayne, MI
Built 1970 ADT: 23,700
M-10 SB TO EB RAMP
UnknownOver: I-75 & RAMP TO SB
IN DETROIT, Wayne, MI
Built 1970 ADT: 43,891
I-75 E-N RAMP
UnknownOver: M-10
IN DETROIT, Wayne, MI
Built 1970 ADT: 104,516
M-10S TO I-75E RMP
UnknownOver: M-10
IN DETROIT, Wayne, MI
Built 1970 ADT: 104,516
M-10N TO I-75S RMP
UnknownOver: M-10
IN DETROIT, Wayne, MI
Built 1970 ADT: 111,518
I-75 W S RAMP
UnknownOver: M-10
IN DETROIT, Wayne, MI
Built 1970 ADT: 111,518
M-10 N-W RAMP
UnknownOver: I-75 & EXIT RAMPS
IN DETROIT, Wayne, MI
Built 1970 ADT: 92,802
I-75 SB ENT RMP
UnknownOver: I-75 NB ENT RAMP
IN DETROIT OVER LODGE, Wayne, MI
Built 1970 ADT: 9,500
THIRD AVE
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1967 ADT: 92,802
SECOND BLVD
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1967 ADT: 75,000
CLIFFORD ST
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1967 ADT: 92,802
RUSSELL ST
UnknownOver: I-75 CONN TO M-3
IN DETROIT, Wayne, MI
Built 1970 ADT: 22,748
M-3 (GRATIOT AVE)
UnknownOver: I-375
DOWNTOWN DETROIT, Wayne, MI
Built 1963 ADT: 74,048
I-75 SB
UnknownOver: I-75 SB TO EB RAMP
I-75 & I-375 INTCHG, Wayne, MI
Built 1970 ADT: 2,700
M-3 NB CONN
UnknownOver: I-75 & I-375
IN DETROIT OVER I-375, Wayne, MI
Built 1964 ADT: 87,592
M-3 WB CONN
UnknownOver: I-375 & I-75 RAMP
IN DETROIT OVER I-375 NW, Wayne, MI
Built 1964 ADT: 11,800
M-3 TO I-375 S RMP
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1963 ADT: 116,840
CANFIELD AVE
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1962 ADT: 145,494
I-75 SB EXIT RAMP
UnknownOver: I-75 E&W TO SB TURN RDWY
IN DETROIT, Wayne, MI
Built 1964 ADT: 22,400
I-94 W-S RAMP
UnknownOver: I-94EB TO I-75NB RAMP
IN DETROIT, Wayne, MI
Built 1964 ADT: 12,100
I-75NB&I-94WB RAMP
UnknownOver: I-75 & RAMP
IN DETROIT, Wayne, MI
Built 1964 ADT: 127,708
I-94 W-S RAMP
UnknownOver: I-75 & RAMP
IN DETROIT, Wayne, MI
Built 1962 ADT: 151,136
I-75 S-E RAMP
UnknownOver: I-75 SB
IN DETROIT, Wayne, MI
Built 1962 ADT: 75,568
MILWAUKEE AVE
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 2021 ADT: 155,775
E GRAND BLVD
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1968 ADT: 151,136
CLAY AVE
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1969 ADT: 156,100
HOLBROOK AVE
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1969 ADT: 156,100
7 MI RD NB LEFT TU
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 2003 ADT: 165,038
M-102 EB SERV RD
UnknownOver: I-75
IN DETROIT, Wayne, MI
Built 1969 ADT: 165,038
DEQUINDRE AVE
UnknownOver: I-75
IN HAMTRAMCK, Wayne, MI
Built 1969 ADT: 143,588
COMMER AVE
UnknownOver: I-75
IN HAMTRAMCK, Wayne, MI
Built 1969 ADT: 159,874
Showing 301-350 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 |