County profile · official public datasets

Macomb County, MI

417 public highway bridges tracked in the FHWA National Bridge Inventory: 42.7% rated Good, 49.6% Fair, 7.7% Poor.

417
Public bridges
42.7%
Good condition
7.7%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Macomb County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 36%
lowest Poor share in state
7.7%
Poor-condition share
417
public highway bridges
1980
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.

Macomb County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Macomb County ranks #30 of 83 Michigan counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.7%). Macomb County, Michigan contains 417 public highway bridges. Roughly 42.7% are rated “Good,” 49.6% “Fair,” and 7.7% “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.

Total bridges

417

Public highway bridges in Macomb County

Good condition

42.7%

178 of 417 rated 7-9

Fair condition

49.6%

207 of 417 rated 5-6

Poor condition

7.7%

32 of 417 rated 4 or below

In-state Poor-share rank

#30 of 83

Among Michigan counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 417 NBI-tracked bridges by lowest applicable component rating.

Good
42.7% (178)
Fair
49.6% (207)
Poor
7.7% (32)

Macomb County's Poor-condition bridges carry 212,104 vehicle crossings a day

That is 3.3% of the county's reported daily bridge traffic on 7.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 6,628 crossings a day against 12,107 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 416 of 417 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

48.2% of Macomb County's bridges have passed the 50-year mark

201 of the 417 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 42.7% 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 17.8% of the county's Poor-condition bridge traffic

M-3 & M-29 over I-94, built 1963, carries 37,832 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 32-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 212,104 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Macomb County's bridges were built

417 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1970s, when 104 of the county's bridges still in the inventory were built, which is 24.9% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1980) matches the Michigan average (1976).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Macomb County compares with Michigan's closest counties by inventory size

The 5 Michigan counties nearest Macomb County in number of bridges, with their condition splits. Its 7.7% Poor share is the 3rd-lowest of these 6. Its average build year of 1980 against a peer-group mean of 1978 is in line with the group.

Showing the 5 closest of 82 Michigan counties eligible for comparison.

Bridge inventory size and condition shares for Macomb County and the 5 Michigan counties closest to it in inventory size
County Bridges Poor
Kent County 523 5.4%
Oakland County 508 7.5%
Macomb County (this page) 417 7.7%
Genesee County 371 15.4%
St. Clair County 327 8.3%
Saginaw County 315 18.4%

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 Macomb 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 Macomb County, both outside Michigan so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside MI (417 bridges here).

Similar average build year

Nearest mean year-built outside MI (1980 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 417 Good 178 Fair 207 Poor 32

All bridges (417)

JEFFERSON AVE

Good

Over: MILK RIVER

S OF NINE MILE ROAD, Macomb, MI

Built 2001 Load: 42.8 t ADT: 7,710

NB SERVICE RD

Good

Over: I-696

IN THE CITY OF WARREN, Macomb, MI

Built 1976 Load: 43.1 t ADT: 24,323

SB SERVICE RD

Good

Over: I-696

IN THE CITY OF WARREN, Macomb, MI

Built 1976 Load: 43.1 t ADT: 24,323

ROMEO PLANK RD

Good

Over: M B CLINTON RIVER

0.3 MI N OF 25 MILE ROAD, Macomb, MI

Built 1997 Load: 43.1 t ADT: 9,180

27 MILE ROAD

Good

Over: DEER CREEK

0.2 MI WEST OF PLACE RD., Macomb, MI

Built 1999 Load: 43.7 t ADT: 110

27 MILE ROAD

Good

Over: COON CREEK

0.2 MI WEST OF NORTH AVE, Macomb, MI

Built 1990 Load: 44.4 t ADT: 234

10 MI RD N INT

Good

Over: I-94

W LTS OF ST CLAIR SHORES, Macomb, MI

Built 1965 Load: 44.7 t ADT: 3,400

29 MILE ROAD

Good

Over: SALT RIVER

0.3 MI W OF GRATIOT US-25, Macomb, MI

Built 1987 Load: 44.7 t ADT: 150

DODGE PARK RD

Good

Over: STERLING RELIEF DRAIN

0.5 MILE N OF 15 MILE RD, Macomb, MI

Built 1978 Load: 44.7 t ADT: 16,407

BEACH STREET

Good

Over: LAKE ST CLAIR CANAL

0.1 MI E OF JEFFERSON, Macomb, MI

Built 2006 Load: 45.0 t ADT: 998

EAST VIEW DRIVE

Good

Over: GLODE DRAIN

0.1 M W OF GARFIELD RD, Macomb, MI

Built 2001 Load: 45.0 t ADT: 350

28 MILE ROAD

Good

Over: N B CLINTON RIVER

1.3 MI WEST OF NORTH AVE, Macomb, MI

Built 2018 Load: 45.4 t ADT: 210

HAYES ROAD

Good

Over: PRICE BROOK DRAIN

0.2 MI SOUTH OF 26 MILE, Macomb, MI

Built 2006 Load: 46.3 t ADT: 2,600

M-29

Good

Over: FISH CREEK

1.4 MI W OF NEW BALTIMORE, Macomb, MI

Built 1972 Load: 46.7 t ADT: 37,832

MCKAY ROAD

Good

Over: N B CLINTON RIVER

0.1 MI S OF SCOTCH SETTLE, Macomb, MI

Built 2006 Load: 46.7 t ADT: 360

M-53 NB

Good

Over: EAST POND CREEK

BRUCE TWP SEC 35-36, Macomb, MI

Built 2002 Load: 46.7 t ADT: 14,182

22 MILE ROAD

Good

Over: SALT SLANG GLOEDE DRAIN

0.8 MI EAST OF HAYES ROAD, Macomb, MI

Built 2021 Load: 47.0 t ADT: 15,930

VAN DYKE AVE

Good

Over: CLINTON RIVER

0.3 MI SOUTH OF M-59, Macomb, MI

Built 1971 Load: 47.3 t ADT: 21,599

27 MILE ROAD

Good

Over: TUPPER BROOK DRAIN

0.1 MI E OF INDIAN TRAIL, Macomb, MI

Built 2004 Load: 47.6 t ADT: 260

M-59 WB

Good

Over: RYAN RD

1.5 MI W OF UTICA, Macomb, MI

Built 1971 Load: 48.6 t ADT: 44,118

CARD ROAD

Good

Over: MCBRIDE DRAIN

0.1 MI SOUTH OF 23 MILE, Macomb, MI

Built 1970 Load: 48.6 t ADT: 11,900

MT VERNON RD

Good

Over: STONY CREEK

0.25 MI NORTH OF 26 MILE, Macomb, MI

Built 2016 Load: 48.6 t ADT: 121

LANGE STREET

Good

Over: LAKE ST CLAIR SHORES

0.1 MI E OF JEFFERSON, Macomb, MI

Built 2006 Load: 48.6 t ADT: 696

EB METRO PARKWAY

Good

Over: HARRINGTON DRAIN

0.75 MI WEST OF M-97, Macomb, MI

Built 1952 Load: 48.9 t ADT: 16,440

OMO ROAD

Good

Over: EAST BRANCH COON CREEK

0.5 MI NORTH OF 26 MILE, Macomb, MI

Built 1999 Load: 48.9 t ADT: 240

I-94

Good

Over: LITTLE MACK AVE

IN ROSEVILLE, Macomb, MI

Built 2002 Load: 49.2 t ADT: 101,088

NB MOUND RD

Good

Over: PLUM BROOK DRAIN

0.3 MI N OF 18 MILE RD, Macomb, MI

Built 1992 Load: 49.2 t ADT: 18,170

NEW HAVEN RD

Good

Over: DEER CREEK

0.1 MILE EAST OF PLACE RD, Macomb, MI

Built 2014 Load: 49.6 t ADT: 2,870

NORTH FULTON ST

Good

Over: E BR COON CREEK

0.25 MI S OF ARMADACENTER, Macomb, MI

Built 1995 Load: 49.9 t ADT: 6,200

23 MILE ROAD

Good

Over: N BRANCH CLINTON RIVER

0.2 MI WEST OF NORTH AVE, Macomb, MI

Built 2013 Load: 50.2 t ADT: 18,430

28 MILE ROAD

Good

Over: KIRKHAM DRAIN

0.8 MI EAST OF GRATIOT, Macomb, MI

Built 2003 Load: 50.2 t ADT: 170

26 MILE ROAD

Good

Over: COON CREEK

0.4 MI WEST OF NORTH AVE, Macomb, MI

Built 1993 Load: 50.5 t ADT: 11,833

26 MILE ROAD

Good

Over: KIRKHAM DRAIN

1.3 MI E OF NEW HAVEN RD, Macomb, MI

Built 2010 Load: 50.9 t ADT: 10,465

SB MOUND RD

Good

Over: I-696

IN THE CITY OF WARREN, Macomb, MI

Built 1976 Load: 51.5 t ADT: 33,000

32 MILE ROAD

Good

Over: N BR CLINTON RIVER

0.4 MI W OF ROMEO PLANK, Macomb, MI

Built 2016 Load: 51.5 t ADT: 16,300

24 MILE ROAD

Good

Over: MCBRIDE DRAIN

0.6 MI WEST OF FOSS ROAD, Macomb, MI

Built 2014 Load: 51.8 t ADT: 3,837

28 MILE ROAD

Good

Over: OVERFLOW N B CLINTON

1.5 MI WEST OF NORTH AVE, Macomb, MI

Built 2018 Load: 51.8 t ADT: 210

GATES ROAD

Good

Over: EAST MILL LAKE OUTLET

1.1 MI WEST OF VAN DYKE, Macomb, MI

Built 2003 Load: 52.2 t ADT: 398

I-94 WB

Good

Over: HARPER RD

0.7 MI S OF M-29, Macomb, MI

Built 1964 Load: 52.5 t ADT: 49,849

I-94 EB

Good

Over: SALT RIVER

0.4 MI NE OF M-19, Macomb, MI

Built 1963 Load: 52.5 t ADT: 23,713

I-94 WB

Good

Over: SALT RIVER

0.4 MI NE OF M-19, Macomb, MI

Built 1963 Load: 52.8 t ADT: 23,713

SHOOK RD

Good

Over: CLINTON HARRISON DRAIN

200 FT WEST OF I-94, Macomb, MI

Built 2016 Load: 53.1 t ADT: 13,400

M-59 WB

Good

Over: DEQUINDRE RD

@ OAKLAND COUNTY LINE, Macomb, MI

Built 1972 Load: 53.5 t ADT: 44,118

I-94 CONN SB GRATI

Good

Over: 13 MILE RD

IN ROSEVILLE (13 MI RD), Macomb, MI

Built 1964 Load: 53.5 t ADT: 17,021

I-94 CONN NB GRATI

Good

Over: 13 MILE RD

IN ROSEVILLE (13 MI RD), Macomb, MI

Built 1964 Load: 53.8 t ADT: 17,021

DIAMANTE DRIVE

Good

Over: GLOEDE DRAIN

0.2 MI E OF GAVIOTA LANE, Macomb, MI

Built 2016 Load: 54.4 t ADT: 100

JEWELL ROAD

Good

Over: YATES DRAIN

0.2 MI SOUTH OF 27 MILE, Macomb, MI

Built 1970 Load: 54.8 t ADT: 5,812

HAGEN ROAD

Good

Over: DEER CREEK

1.0 MI EAST OF NORTH AVE, Macomb, MI

Built 2014 Load: 55.1 t ADT: 231

LAKESHORE DRIVE

Good

Over: CHANNEL TO LAKE ST CLAIR

0.2 MI SOUTH OF HURON PT, Macomb, MI

Built 2016 Load: 55.4 t ADT: 1,843

LAKESHORE DRIVE

Good

Over: CHANNEL TO LAKE ST CLAIR

0.1 MI NORTH OF RIVERDALE, Macomb, MI

Built 2016 Load: 55.4 t ADT: 2,490

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.