Total bridges
1,026
Public highway bridges in Wayne County
County profile · official public datasets
Wayne County, MI
1,026 public highway bridges tracked in the FHWA National Bridge Inventory: 37.9% rated Good, 50.4% Fair, 11.7% Poor.
- 1,026
- Public bridges
- 37.9%
- Good condition
- 11.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Wayne County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- 44th
- of 83 on Poor share
- 11.7%
- Poor-condition share
- 1,026
- public highway bridges
- 1971
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Wayne County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Wayne County ranks #44 of 83 Michigan counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 11.7%). Wayne County, Michigan contains 1,026 public highway bridges. Roughly 37.9% are rated “Good,” 50.4% “Fair,” and 11.7% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
37.9%
389 of 1,026 rated 7-9
Fair condition
50.4%
517 of 1,026 rated 5-6
Poor condition
11.7%
120 of 1,026 rated 4 or below
In-state Poor-share rank
#44 of 83
Among Michigan counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 1,026 NBI-tracked bridges by lowest applicable component rating.
Good 37.9% (389)
Fair 50.4% (517)
Poor 11.7% (120)
Wayne County's Poor-condition bridges carry 1,926,774 vehicle crossings a day
That is 8.7% of the county's reported daily bridge traffic on 11.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 16,056 crossings a day against 20,428 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 1,020 of 1,026 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
70.4% of Wayne County's bridges have passed the 50-year mark
722 of the 1,026 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 37.9% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 5.1% of the county's Poor-condition bridge traffic
I-94 over ENT TO FORD PLANT, built 1971, carries 98,506 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 120-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 1,926,774 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Wayne County's bridges were built
1,026 bridges with a recorded construction year, grouped by decade
- 1900s 2
1900–1909
2 bridges
- 1910s 1
1910–1919
1 bridges
- 1920s 45
1920–1929
45 bridges
- 1930s 67
1930–1939
67 bridges
- 1940s 37
1940–1949
37 bridges
- 1950s 113
1950–1959
113 bridges
- 1960s
1960–1969
201 bridges
- 1970s
1970–1979
297 bridges
- 1980s 55
1980–1989
55 bridges
- 1990s 45
1990–1999
45 bridges
- 2000s 90
2000–2009
90 bridges
- 2010s 45
2010–2019
45 bridges
- 2020s 28
2020–2029
28 bridges
What this shows Construction peaked in the 1970s, when 297 of the county's bridges still in the inventory were built, which is 28.9% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1971, 5 years older than the Michigan average of 1976.
How Wayne County compares with Michigan's closest counties by inventory size
The 5 Michigan counties nearest Wayne County in number of bridges, with their condition splits. Its 11.7% Poor share is the 5th-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1978 is 7 years older.
Showing the 5 closest of 82 Michigan counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Wayne County (this page) | 1,026 | 37.9% | 50.4% | 11.7% | 1971 |
| Kent County | 523 | 36.9% | 57.7% | 5.4% | 1975 |
| Oakland County | 508 | 41.5% | 51% | 7.5% | 1982 |
| Macomb County | 417 | 42.7% | 49.6% | 7.7% | 1980 |
| Genesee County | 371 | 22.9% | 61.7% | 15.4% | 1968 |
| St. Clair County | 327 | 41.3% | 50.5% | 8.3% | 1985 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Wayne County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Wayne County, both outside Michigan so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MI (1,026 bridges here).
- Worcester County, MA · 1,014 bridges
- Lane County, OR · 1,010 bridges
- Miami-Dade County, FL · 1,057 bridges
- Denton County, TX · 991 bridges
Similar average build year
Nearest mean year-built outside MI (1971 here).
- Baltimore County, MD · avg 1971 · 783 bridges
- Washington County, PA · avg 1971 · 655 bridges
- Linn County, OR · avg 1971 · 566 bridges
- Monmouth County, NJ · avg 1971 · 505 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (517)
OAKMAN BLVD WB
FairOver: I-96 (JEFFRIES FRWY)
IN DETROIT, Wayne, MI
Built 1971 Load: 50.9 t ADT: 5,075
WOODRUFF ROAD
FairOver: SMITH CREEK
BRNTWN/RKWDE/FORT, Wayne, MI
Built 1981 Load: 50.9 t ADT: 583
NOTTINGHAM RD
FairOver: I-94
IN DETROIT, Wayne, MI
Built 1958 Load: 51.2 t ADT: 600
N TERRITORIAL RD
FairOver: M-14
2.5 MI W OF PLYMOUTH, Wayne, MI
Built 1976 Load: 51.2 t ADT: 65,500
M-10 SB
FairOver: WB JEFFERSON AVE
IN CITY OF DETROIT, Wayne, MI
Built 1987 Load: 51.2 t ADT: 37,039
HORSE MILL ROAD
FairOver: THOROFARE CANAL
GROSSE ILE E/MERIDIAN, Wayne, MI
Built 1937 Load: 51.2 t ADT: 1,338
CADIEUX AVE
FairOver: I-94
IN DETROIT, Wayne, MI
Built 1959 Load: 51.5 t ADT: 15,233
M-14 (OLD)
FairOver: TONQUISH CREEK
0.3 MI E MAIN ST PLYMOUTH, Wayne, MI
Built 1926 Load: 51.5 t ADT: 32,679
RMP I-96E TO I-75N
FairOver: I-75 SB & ENTRANCE RAMP
IN DETROIT, Wayne, MI
Built 1970 Load: 51.5 t ADT: 33,794
STATE FAIR AVE
FairOver: I-75
IN DETROIT, Wayne, MI
Built 1967 Load: 51.5 t ADT: 8,120
SHELDON ROAD
FairOver: JOHNSON DRAIN
NORTHVILLE S/E N HINES DR, Wayne, MI
Built 1933 Load: 51.5 t ADT: 10,057
I-94 WB
FairOver: I-94 RAMP FROM M-10
IN DETROIT OVER RAMP HE S, Wayne, MI
Built 1955 Load: 51.8 t ADT: 70,585
WHITTIER RD
FairOver: I-94
IN DETROIT, Wayne, MI
Built 1959 Load: 51.8 t ADT: 12,173
I-96 EB
FairOver: EIGHT MILE RD
IN LIVONIA, Wayne, MI
Built 1974 Load: 51.8 t ADT: 96,172
I-75 W S RAMP
FairOver: M-10
IN DETROIT, Wayne, MI
Built 1970 Load: 51.8 t ADT: 15,420
M-8 E-S RAMP
FairOver: GTW RR
IN DETROIT, Wayne, MI
Built 1971 Load: 51.8 t ADT: 22,520
SEVEN MILE ROAD
FairOver: MIDDLE ROUGE RIVER
NORTHVILLE W/NORTHVILL RD, Wayne, MI
Built 1954 Load: 51.8 t ADT: 7,853
HARRISON ST
FairOver: S BR ECORSE RIVER
IN LINCOLN PARK, Wayne, MI
Built 2011 Load: 51.8 t ADT: 1,100
I-96 WB
FairOver: EIGHT MILE RD
IN LIVONIA, Wayne, MI
Built 1974 Load: 52.2 t ADT: 96,172
M-85 SB
FairOver: FRANK & POET DRAIN
IN TRENTON, Wayne, MI
Built 1958 Load: 52.2 t ADT: 15,575
I-75 NB OFF RAMP
FairOver: RR AND MAINT RD
IN DETROIT, Wayne, MI
Built 1967 Load: 52.5 t ADT: 103,925
US-12 (MICHIGAN AV
FairOver: I-94
IN DEARBORN, Wayne, MI
Built 1948 Load: 52.8 t ADT: 28,335
I-75 SB ON RAMP
FairOver: ROUGE RIVER & PLEASANT S
IN DETROIT, Wayne, MI
Built 1967 Load: 52.8 t ADT: 103,925
M-85 NB
FairOver: FRANK & POET DRAIN
IN TRENTON, Wayne, MI
Built 1958 Load: 52.8 t ADT: 15,575
MARTIN STREET
FairOver: I-94
IN DETROIT, Wayne, MI
Built 1949 Load: 53.1 t ADT: 5,948
I-275 NB COLLECTOR
FairOver: M-14
0.3 MI W OF LIVONIA, Wayne, MI
Built 1971 Load: 53.1 t ADT: 11,680
I-94 EB ENT RAMP
FairOver: I-75 RAMP TO I-94
IN DETROIT, Wayne, MI
Built 1961 Load: 53.5 t ADT: 6,740
US-24 I-75 CONN NB
FairOver: RACHO RD
IN TAYLOR OVER RACHO RD, Wayne, MI
Built 1964 Load: 53.7 t ADT: 9,440
WARREN AVE
FairOver: I-94
IN DETROIT, Wayne, MI
Built 1953 Load: 54.1 t ADT: 5,766
M-10 N-W RAMP
FairOver: I-75 & EXIT RAMPS
IN DETROIT, Wayne, MI
Built 1970 Load: 54.1 t ADT: 11,370
I-75 SB ENT RMP
FairOver: I-75 NB ENT RAMP
IN DETROIT OVER LODGE, Wayne, MI
Built 1970 Load: 54.1 t ADT: 8,093
I-75 SB
FairOver: N HURON RIVER DRIVE
IN ROCKWOOD, Wayne, MI
Built 2008 Load: 54.1 t ADT: 31,313
I-94 EB RAMP
FairOver: GREENFIELD RD
IN DEARBORN, Wayne, MI
Built 1971 Load: 54.4 t ADT: 18,160
SOUTH HURON
FairOver: I-275
1.9 MI SE OF NEW BOSTON, Wayne, MI
Built 1974 Load: 54.4 t ADT: 4,791
N SERVICE RD
FairOver: I-75 RAMP TO WB M-8
IN DETROIT M-8 WB RAMP, Wayne, MI
Built 1971 Load: 54.8 t ADT: 3,180
GRAND RIVER AVE
FairOver: I-96
IN DETROIT, Wayne, MI
Built 1972 Load: 54.8 t ADT: 19,650
WILL CARLETON RD
FairOver: I-275
WAYNE MONROE CO LINE, Wayne, MI
Built 1974 Load: 55.0 t ADT: 5,060
SB CONNER AVE
FairOver: I-94
IN DETROIT, Wayne, MI
Built 1958 Load: 55.1 t ADT: 27,061
SCHAEFER SE TURN
FairOver: M-10
IN DETROIT, Wayne, MI
Built 1964 Load: 55.1 t ADT: 3,000
SCHAEFER NW TURN
FairOver: M-10
IN DETROIT, Wayne, MI
Built 1964 Load: 55.1 t ADT: 3,000
I-75S TO I-94E RMP
FairOver: I-94
IN DETROIT, Wayne, MI
Built 1962 Load: 55.1 t ADT: 10,110
I-275 NB
FairOver: M-14
0.3 MI W OF LIVONIA, Wayne, MI
Built 1971 Load: 55.1 t ADT: 65,653
MARIAN DRIVE
FairOver: FRANK AND POET DRAIN
IN TRENTON, Wayne, MI
Built 1959 Load: 55.1 t ADT: 3,300
I-275 NB
FairOver: CSX RR
IN ROMULUS (SW), Wayne, MI
Built 1974 Load: 55.4 t ADT: 35,403
MAPLEWOOD AVE
FairOver: I-96
IN DETROIT, Wayne, MI
Built 1972 Load: 55.7 t ADT: 4,400
MACK AVE
FairOver: CONRAIL
BETWN CONNER AND ST JEAN, Wayne, MI
Built 1989 Load: 55.7 t ADT: 9,682
I-94 WB
FairOver: HANNAN RD
3 MI E OF BELLEVILLE, Wayne, MI
Built 1972 Load: 56.1 t ADT: 57,166
M-14
FairOver: EDWARD HINES DRIVE
0.4 MI WEST OF PLYMOUTH, Wayne, MI
Built 1976 Load: 56.1 t ADT: 90,300
OUTER DRIVE NB
FairOver: I-94
IN DETROIT, Wayne, MI
Built 1959 Load: 56.4 t ADT: 4,373
M-5 GRAND RIVER AV
FairOver: I-96 (JEFFRIES FRWY)
IN DETROIT, Wayne, MI
Built 1971 Load: 56.4 t ADT: 17,798
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.