Total bridges
28
Public highway bridges in Luce County
County profile · official public datasets
Luce County, MI
28 public highway bridges tracked in the FHWA National Bridge Inventory: 39.3% rated Good, 42.9% Fair, 17.9% Poor.
- 28
- Public bridges
- 39.3%
- Good condition
- 17.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Luce County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- 70th
- of 83 on Poor share
- 17.9%
- Poor-condition share
- 28
- public highway bridges
- 1981
- 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.
Luce County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Luce County ranks #70 of 83 Michigan counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 17.9%). Luce County, Michigan contains 28 public highway bridges. Roughly 39.3% are rated “Good,” 42.9% “Fair,” and 17.9% “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
39.3%
11 of 28 rated 7-9
Fair condition
42.9%
12 of 28 rated 5-6
Poor condition
17.9%
5 of 28 rated 4 or below
In-state Poor-share rank
#70 of 83
Among Michigan counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 28 NBI-tracked bridges by lowest applicable component rating.
Good 39.3% (11)
Fair 42.9% (12)
Poor 17.9% (5)
Luce County's Poor-condition bridges carry 619 vehicle crossings a day
That is 3.7% of the county's reported daily bridge traffic on 17.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 124 crossings a day against 242 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 28 of 28 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
35.7% of Luce County's bridges have passed the 50-year mark
10 of the 28 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 39.3% 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 92.7% of the county's Poor-condition bridge traffic
M-123 over AUGER CREEK, built 1937, carries 574 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 5-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 619 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Luce County's bridges were built
28 bridges with a recorded construction year, grouped by decade
- 1910s 1
1910–1919
1 bridges
- 1930s 2
1930–1939
2 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 2
1950–1959
2 bridges
- 1960s 2
1960–1969
2 bridges
- 1970s
1970–1979
4 bridges
- 1980s
1980–1989
4 bridges
- 1990s
1990–1999
3 bridges
- 2000s
2000–2009
7 bridges
- 2010s 1
2010–2019
1 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 2000s, when 7 of the county's bridges still in the inventory were built, which is 25% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1981, 5 years newer than the Michigan average of 1976.
How Luce County compares with Michigan's closest counties by inventory size
The 5 Michigan counties nearest Luce County in number of bridges, with their condition splits. Its 17.9% Poor share is the 4th-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1973 is 8 years newer.
Showing the 5 closest of 82 Michigan counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Ogemaw County | 31 | 22.6% | 74.2% | 3.2% | 1969 |
| Lake County | 30 | 43.3% | 40% | 16.7% | 1967 |
| Luce County (this page) | 28 | 39.3% | 42.9% | 17.9% | 1981 |
| Alcona County | 27 | 48.1% | 33.3% | 18.5% | 1982 |
| Benzie County | 25 | 28% | 40% | 32% | 1969 |
| Otsego County | 25 | 16% | 76% | 8% | 1976 |
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 Luce 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 Luce County, both outside Michigan so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MI (28 bridges here).
- Crowley County, CO · 28 bridges
- Dolores County, CO · 28 bridges
- Lafayette County, FL · 28 bridges
- Union County, FL · 28 bridges
Similar average build year
Nearest mean year-built outside MI (1981 here).
- Franklin County, OH · avg 1981 · 922 bridges
- Greenville County, SC · avg 1981 · 635 bridges
- Montgomery County, OH · avg 1981 · 632 bridges
- McLean County, IL · avg 1981 · 624 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (12)
COUNTY ROAD 412
FairOver: LITTLE TWO HEARTED RIVER
2.5 W OF BODI LAKE, Luce, MI
Built 1948 Load: 5.5 t ADT: 10
M-28
FairOver: W BR SAGE RIVER
5.5 MI E OF M-123, Luce, MI
Built 2001 Load: 23.7 t ADT: 2,127
COUNTY RD 412&414
FairOver: E BR TWO HEARTED RIVER
JUNCT CO 412 414 410 435, Luce, MI
Built 1993 Load: 35.5 t ADT: 40
OLD SENEY
FairOver: E BR OF FOX RIVER
1 MI E SCHOOLCRAFT CO LIN, Luce, MI
Built 1987 Load: 37.6 t ADT: 25
M-28
FairOver: E BR FOX RIVER
2.8 MI E OF SCHLCRFT COL, Luce, MI
Built 1989 Load: 43.1 t ADT: 1,763
COUNTY ROAD 407
FairOver: DAWSON CREEK
17 MI.N. OF NEWBERRY, Luce, MI
Built 1983 Load: 48.0 t ADT: 420
ROUTE 415
FairOver: TAHQUAMENON RIVER
2 MI. N. MC MILLAN, Luce, MI
Built 1974 Load: 49.8 t ADT: 40
M-28
FairOver: E BR SAGE RIVER
4.2 MI W OF CHIPPEWA COL, Luce, MI
Built 1959 Load: 49.9 t ADT: 2,127
M-123
FairOver: TAHQUAMENON RIVER
1.3 MI N OF NEWBERRY, Luce, MI
Built 1978 Load: 51.8 t ADT: 1,162
M-28
FairOver: E BR TEASPOON CREEK
0.9 MI NW OF M-123, Luce, MI
Built 1993 Load: 52.2 t ADT: 3,756
DOLLARVILLE ROAD
FairOver: TEASPOON CREEK
1.5 MI. S.OF DOLLARVILLE, Luce, MI
Built 1951 Load: 69.7 t ADT: 1,700
DEER PARK
FairOver: TWO HEARTED RIVER
2 M N PINE STUMP JUNCTION, Luce, MI
Built 1961 Load: 82.7 t ADT: 315
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.